DHI Hair Transplant Risks Explained Honestly: Swelling, Folliculitis and Uneven Growth

The mirror is where it usually starts. A man in his late thirties tilts his head under the bathroom light, sees more scalp than he did last spring, and that night types “DHI hair transplant risks” into his phone. He is not looking for a sales pitch. He wants to know what can actually go wrong, how often, and what it looks like on a real head.

That instinct is a good one. Direct hair implantation, usually shortened to DHI, is a refinement of a well-established surgical technique, and like every surgery it carries a predictable set of complications. Some are almost universal and harmless, such as a puffy forehead on day three. Others, like clusters of tender pimples around the grafts or a patch that never quite fills in, are less common but more upsetting, partly because nobody warned the patient they were possible.

This explainer walks through each risk the way a good surgeon would across a desk: what it is, why it happens, how long it typically lasts, and when it stops being normal.

What actually happens during a DHI hair transplant?

DHI is a way of placing hair grafts, not a different kind of hair. To understand the risks you first need the mechanics. A hair transplant moves your own hair follicles from a region resistant to balding, usually the back and sides of the scalp, to an area that is thinning. Follicular unit extraction, or FUE, is the method of harvesting those follicles one tiny group at a time with a small circular punch, leaving pinpoint wounds rather than a long strip scar (NHS).

DHI uses FUE harvesting but changes the second half of the operation. In classic FUE the surgeon first makes hundreds of small slits in the recipient area, then a team places a graft into each slit with forceps. In DHI the graft is loaded into a hollow, spring-loaded needle known as an implanter pen. Pressing the pen against the scalp creates the opening and deposits the graft in one motion. The graft spends less time sitting outside the body, and the surgeon controls angle and depth at the moment of insertion.

Everything else is familiar surgery. The procedure is done under local anesthetic, which numbs the scalp while you stay awake. Sessions commonly run most of a day because thousands of individual grafts are involved (MedlinePlus). The scalp is cleaned, the donor zone is usually shaved, and afterward you leave with a light dressing or none at all.

Why does this matter for risk? Because the wounds are the same size, the anesthetic is the same, and the biology of a transplanted follicle taking root does not change with the tool. The implanter pen may alter how precisely grafts are angled and how much handling each one endures, and those two variables feed directly into the risks of uneven growth and folliculitis discussed later.

Why DHI hair transplant risks look so much like FUE risks

Ask a dermatologic surgeon to list the complications of DHI and you will hear the same list they give for FUE, sometimes with one or two footnotes. That is not evasion. DHI is a placement technique layered on top of FUE harvesting, so the risk profile is inherited almost intact.

Published reviews of hair transplant complications group them broadly into early problems and late problems. Early ones appear within days: swelling, bleeding, pain, crusting, numbness and, less often, infection. Late ones emerge over weeks to months: folliculitis, shock loss of surrounding hair, poor graft survival, visible donor thinning, unnatural hairline design and cysts where a graft was buried too deep (NIH, PMC). The NHS lists a nearly identical set for hair transplants in general, including bleeding, infection, swelling, bruising around the eyes, crusting, numbness, itching and inflammation of the hair follicles (NHS).

Where DHI differs is in emphasis rather than in kind. Because each graft is loaded into a needle, there is a theoretical risk of crushing the delicate lower bulb during loading, which would reduce survival. Because the needle sets depth, a graft can be seated too deep, raising the chance of a buried follicle and later cyst or pimple. On the other side of the ledger, shorter time outside the body may help grafts, and controlled angling may reduce the risk of hair growing in odd directions.

What the evidence does not support is a claim that DHI is meaningfully safer or riskier overall. Head-to-head comparative data are limited and mostly come from single centers. The honest summary is that the operator’s skill, the number of grafts harvested and your own scalp biology influence outcome far more than the choice between forceps and pen.

Swelling after hair transplant: why your forehead puffs up on day three

Of all the DHI hair transplant risks, swelling is the one almost everyone experiences and almost nobody is prepared for. It rarely appears on the day of surgery. Instead, sometime between the second and fourth day, the forehead feels tight, then visibly puffy, and in some people the fluid tracks downward until the eyelids are heavy and bruised (NHS).

The mechanism is ordinary physiology. Local anesthetic is delivered in a large volume of dilute fluid, a technique that numbs tissue and limits bleeding. Add the inflammatory response to thousands of tiny wounds and the scalp’s loose connective tissue, and gravity does the rest. Fluid that has nowhere to drain slides forward and down under the skin of the forehead. The eyes look worst because the eyelid skin is the thinnest on the body and shows fluid readily.

Reviews of complications list swelling among the most frequently reported early events after any hair transplant, with the front-of-scalp and hairline cases most affected simply because the fluid has a shorter path to the face (NIH, PMC). It typically peaks around day three to four and drains within about a week, though bruising around the eyes can linger a little longer.

Several habits reduce it, and your team will usually give specific instructions: sleeping with the head elevated for the first several nights, avoiding bending forward, and not rubbing the forehead. Some surgeons use short courses of anti-inflammatory medication around the procedure; whether that is appropriate is a decision for the prescribing clinician, not something to arrange yourself.

The important distinction is between soft, painless, symmetrical swelling, which is expected, and swelling that is hot, tender, one-sided or accompanied by fever. The first is a nuisance. The second is a reason to call.

Folliculitis after hair transplant: the pimples nobody mentions

Folliculitis is inflammation of a hair follicle, and after a transplant it shows up as small red bumps or white-headed pimples scattered through the recipient area, sometimes the donor zone too. It is one of the more common later complaints, often surfacing between the second week and the third month as new hairs begin to push toward the surface (Cleveland Clinic).

Two things cause it. The first is a mechanical trap. A fine new hair, or a fragment of the old shaft left inside the graft, gets caught under the skin instead of exiting through a pore. The body treats that trapped keratin as a foreign object and mounts an inflammatory reaction, producing a tender bump. This type is sterile: no bacteria are involved. The second cause is true bacterial folliculitis, most often from the skin’s own staphylococcal bacteria entering a healing follicle. It looks similar but tends to be more painful, may spread, and can produce pus.

DHI has a specific relevance here. If the implanter needle seats a graft too deep, the follicle sits below the level where its hair can emerge cleanly. That is one reason surgeons pay close attention to depth control with the pen, and one reason a small number of buried grafts can appear as persistent cysts months later.

Management depends on the type. A few isolated sterile bumps usually resolve on their own once the hair breaks through, sometimes helped by warm compresses. A widespread or pus-forming pattern needs assessment, because a clinician may want to release trapped hairs, take a swab, or prescribe an antibiotic. Do not squeeze the bumps; that can damage the graft beneath and spread infection.

Isolated folliculitis rarely affects the final result. Extensive or repeated episodes can scar individual follicles, which is why early review matters more than heroic home treatment.

Uneven growth, patchiness and the shock loss surprise

Here is the risk that keeps people awake at month five: the fear that the transplant has not worked, or has worked only in patches. Understanding why regrowth is uneven separates a normal process from a genuine problem.

First, the normal part. Transplanted hairs almost always fall out between roughly two and eight weeks after surgery, a phase that alarms patients but is entirely expected; the follicle stays behind and enters a resting period before regrowing (NHS). Regrowth begins around the third to fourth month, and because each follicle restarts on its own clock, it comes back in waves. At month six the result can look genuinely patchy. The NHS advises that full results take six months to a year to judge (NHS).

Shock loss is a related phenomenon. The trauma of surgery, including the anesthetic and the tiny incisions, can push existing hairs around the recipient area, and occasionally in the donor zone, into a resting phase. They shed a few weeks after the procedure and usually regrow, but hairs that were already miniaturizing from pattern baldness may not all return (NIH, PMC).

Then the abnormal part. Genuinely poor growth, meaning a region where few grafts ever produce hair, is usually traced to damage during handling, grafts left too long outside the body or allowed to dry, poor blood supply in a densely packed area, or smoking and other factors that impair healing. In DHI, excessive force when loading the pen can crush the bulb. Unnatural direction, where hairs grow at the wrong angle, is a design and placement issue rather than a survival issue.

No guideline offers a reliable percentage for graft survival that applies across techniques and surgeons, and any figure quoted to you should be treated as a single practice’s estimate rather than a promise. A fair assessment of unevenness is only possible after the first year.

Donor area risks: the part of the scalp people forget to ask about

Most anxiety is aimed at the front of the head, yet several of the more permanent DHI hair transplant risks live at the back. The donor zone is a finite resource, and how it is treated determines whether you keep options for the future.

Every FUE punch leaves a small round wound that heals into a pale dot. Individually these are hard to see; collectively, with very short hair, they can create a faintly moth-eaten look, especially in people with darker skin or a tendency to keloid scarring (NHS). Because DHI and FUE share the same harvest, this scarring risk is identical.

Overharvesting is the more serious concern. Removing too many follicles from one region, or extracting them too close together, thins the donor area visibly and can leave it looking worse than the zone it was meant to repair. Surgeons manage this by spreading extraction across the whole safe donor region and respecting a density ceiling. A large single session raises the risk simply because more punches are made in one sitting.

Other donor-side events are milder and usually temporary. Numbness or altered sensation follows any procedure that cuts through small skin nerves and commonly fades over weeks to months. Itching as wounds close is nearly universal. Crusting typically clears within the first couple of weeks with gentle washing (MedlinePlus). A small percentage of people develop hypertrophic scars or, rarely, keloids; a history of either should be raised before surgery.

One further point is easy to miss. Hair used for transplant is chosen because it resists the hormone-driven miniaturization of pattern baldness. In some people the lower fringe of the donor zone is not fully resistant and may thin with age, thinning any transplanted hair taken from it as well. Good surgical planning stays within the most reliable region for exactly this reason.

Infection, bleeding, numbness and the rare serious complications

Serious complications after hair transplant are uncommon, but honest counseling includes them. Infection is the one most people fear and one of the least frequent, largely because the scalp has an exceptionally rich blood supply that helps wounds heal. When it does occur it tends to appear within the first one to two weeks as increasing pain, warmth, spreading redness, pus or fever (MedlinePlus). Prompt treatment, usually with antibiotics chosen by the clinician, resolves most cases; delayed treatment can cost grafts.

Bleeding is normally minor and stops with light pressure. Persistent oozing is more likely in people taking blood-thinning medicines, drinking alcohol in the days around surgery, or with undiagnosed clotting problems. This is why a thorough medical history matters and why any prescribed anticoagulant is discussed with the prescribing doctor beforehand rather than stopped on your own.

Numbness across the top of the scalp is very common in the first weeks. It comes from small sensory nerves being cut and usually recovers gradually as they regrow. Persistent numbness beyond several months is unusual and worth mentioning at follow-up.

Two rare events deserve a sentence each. Skin necrosis, meaning death of a patch of scalp skin, can occur when grafts are packed so densely that the blood supply cannot support them, or in heavy smokers; it is very uncommon and is a reason surgeons limit density per session (NIH, PMC). Reactions to local anesthetic range from lightheadedness to, extremely rarely, true toxicity, which is why dosing is calculated by the surgical team and why lengthy sessions are monitored.

A different category of risk is aesthetic rather than medical: a hairline placed too low or too straight, which cannot be undone easily and ages poorly as natural hair recedes behind it. That outcome is a planning error, and it is prevented at the consultation, not in recovery.

DHI vs FUE risks: a side-by-side summary table

Patients often ask for a clean comparison. The table below summarizes how the main complications compare across DHI, standard FUE and the older strip method known as follicular unit transplantation (FUT), in which a strip of scalp is removed and stitched. The entries reflect mainstream descriptions of each technique rather than a formal ranking; robust comparative trials are scarce, and the surgeon’s experience shifts every row (NIH, PMC; NHS).

Risk	DHI	Standard FUE	FUT (strip)
Forehead and eye swelling	Common, temporary	Common, temporary	Common, temporary
Folliculitis	Possible; buried grafts a specific concern	Possible	Possible
Donor scarring	Many small dots	Many small dots	One linear scar
Donor overharvesting	Risk rises with large sessions	Risk rises with large sessions	Limited by strip width
Graft handling damage	Possible during pen loading	Possible with forceps	Possible during dissection
Time grafts spend outside body	Generally shorter	Longer	Longer
Numbness	Usually temporary	Usually temporary	More common along scar
Infection	Uncommon	Uncommon	Uncommon

Two observations stand out. First, the DHI and FUE columns are nearly identical, which is exactly what you would expect from techniques that share a harvest. Second, the differences that do exist point in opposite directions: potentially gentler on graft timing, potentially more demanding on depth control. Neither adds up to a blanket safety advantage, and any clinic that presents one technique as risk-free is oversimplifying.

Who a DHI hair transplant is usually for, and who is asked to wait

A transplant redistributes hair; it does not create new follicles. That single fact shapes who is a sensible candidate. The typical patient has male- or female-pattern hair loss that has stabilized, a donor area dense enough to supply the thinning zone, realistic expectations about density, and general health good enough for a long day under local anesthetic (Mayo Clinic).

DHI is sometimes favored where precise angling matters, for example along a hairline, in eyebrows, or when placing grafts between existing hairs without shaving the whole recipient area. Those are technical preferences rather than medical indications, and a surgeon skilled in standard FUE can achieve comparable placement.

Several groups are commonly asked to wait or to consider other options. Young adults whose hair loss is still progressing are a classic example: a hairline built for a twenty-three-year-old can look isolated a decade later as native hair recedes behind it, and the donor supply may be needed for that future. People with diffuse thinning across the whole scalp, including the donor zone, may lack a stable source. Anyone with an active scalp disease such as untreated psoriasis, lichen planopilaris or other scarring alopecia is usually deferred, because surgery can worsen an inflammatory process or the grafts may not survive in inflamed skin.

Hair loss from a temporary cause, such as illness, iron deficiency, thyroid disorder, crash dieting or certain medications, is a reason to treat the cause first; the hair often returns on its own (Mayo Clinic). Patchy loss from alopecia areata, an autoimmune condition, is generally not transplanted because the immune attack can target the new grafts too.

Medical factors also matter: uncontrolled diabetes, bleeding disorders, keloid tendency, heavy smoking and body dysmorphic disorder all warrant a careful conversation. The decision to proceed, defer or decline sits with the treating team after examination.

What the days and weeks after DHI usually look like

Recovery follows a recognizable arc, and knowing it in advance turns most surprises into expected milestones. Timeframes below are typical ranges drawn from general hair transplant guidance; your own team’s instructions take precedence.

Day 0 to 2. The scalp is tender and may feel tight. Pinpoint scabs form over each graft. Some clinics apply a dressing to the donor area for a day or two; others leave it open (MedlinePlus). You are usually told to sleep semi-upright and avoid touching the recipient area.

Day 2 to 5. Swelling peaks, sometimes reaching the eyelids. Gentle washing usually begins under instruction. Many people return to desk work after about three days, though they may prefer to wait until swelling settles (NHS).

Week 1 to 2. Scabs loosen and lift with washing; grafts are considered anchored by roughly the end of the second week. Itching is common. Numbness persists. Strenuous exercise, swimming and heavy sweating are commonly restricted for about a month (NHS).

Week 2 to 8. Transplanted hairs shed. This is the emotional low point, and it is normal (NHS). Folliculitis, if it occurs, often appears now.

Month 3 to 6. Fine new hairs emerge in waves. Density looks patchy and texture may be wiry at first.

Month 6 to 12. Hairs thicken and the pattern fills. The NHS advises that the full result is visible at six months to a year, with texture continuing to mature after that (NHS).

Through all of this, the donor area quietly heals on its own schedule: redness fading over weeks, dots becoming barely visible under hair that has regrown to a few millimeters. Follow-up visits, whether in person or by photograph, are where subtle problems such as slow-healing spots or early folliculitis get caught.

DHI hair transplant side effects: how to lower the odds before and after

You cannot eliminate surgical risk, but a meaningful share of it is modifiable, and the modifiable part is split between your surgeon’s planning and your own habits.

Before surgery, the single most valuable step is a proper diagnosis. Pattern hair loss is common, but scarring alopecias, thyroid disease, iron deficiency and medication effects can mimic it, and transplanting into an undiagnosed inflammatory scalp condition is a recipe for graft failure (Mayo Clinic). Disclose every medicine and supplement, especially anything that affects clotting, and let the prescribing doctor decide whether anything should change. Stopping smoking well ahead of surgery improves scalp blood flow and healing; the same applies to alcohol in the days around the procedure.

During planning, ask how many grafts are intended, from where, and why. Conservative density per session and a hairline designed for the face you will have at sixty are the two decisions that most protect against overharvesting, necrosis and an unnatural result.

After surgery, follow the washing routine you are given precisely. Gentle cleansing removes crusts and reduces the bacterial load that fuels folliculitis; scrubbing dislodges grafts. Keep the head elevated at night during the first several days to limit swelling. Avoid direct sun on the healing scalp, hats that rub, and helmets, until cleared. Do not pick scabs or squeeze bumps. Resume exercise on the timeline your team sets, typically around a month for strenuous activity (NHS).

Many surgeons also discuss medical therapy to slow ongoing loss in native hair, since a transplant does nothing to stop the underlying process. Options such as topical minoxidil, which is thought to prolong the growth phase of follicles, or oral 5-alpha-reductase inhibitors, which lower the hormone driving miniaturization, take several months to show effect and carry their own side effects (Mayo Clinic). Whether either suits you is a decision for the prescribing clinician.

What people often get wrong about DHI hair transplant risks

Misconceptions cluster around a handful of themes, and correcting them removes a lot of unnecessary fear and some misplaced confidence.

“DHI is scarless.” The implanter pen changes how grafts go in, not how they come out. Harvesting still leaves hundreds or thousands of tiny punch scars in the donor area. They are small and usually hidden by hair, but they are permanent (NHS).

“If the hair falls out, the transplant failed.” Shedding of transplanted hairs between about two and eight weeks is the rule, not the exception. The follicles remain and regrow later (NHS). Judging the result before six months is judging a half-finished painting.

“Pimples mean infection.” Many post-transplant bumps are sterile folliculitis from trapped hairs and settle on their own. Spreading redness, pus and fever are the features that point toward a bacterial cause and need assessment (Cleveland Clinic).

“More grafts in one session is better.” Beyond a point, packing grafts densely starves them of blood supply and exhausts the donor area. Two moderate sessions are often safer than one heroic one.

“Transplanted hair is permanent, so the problem is solved.” The grafts are resistant to pattern loss, but the native hair around them is not. Without a plan for ongoing thinning, an island of transplanted hair can end up surrounded by a widening gap.

“Numbness means nerve damage that will not heal.” Sensory changes are expected after any scalp surgery and usually resolve over weeks to months as small nerves regrow.

“A technique name guarantees an outcome.” No professional guideline endorses DHI, FUE or FUT as universally superior. Outcome depends on candidate selection, planning, technical skill and aftercare far more than on branding.

Questions to ask your care team before agreeing to DHI

A consultation is the best risk-reduction tool you have, and the quality of the answers tells you a great deal. These questions are phrased so you can bring them as a list.

• What is my diagnosis, and how was it confirmed? Has a scarring or inflammatory scalp condition been ruled out?
• Is my hair loss likely to progress, and how does the plan account for that over the next twenty years?
• How many grafts do you intend to harvest, from which areas, and what density will you leave behind in the donor zone?
• Who will perform each stage: the extraction, the loading of the implanter, and the placement? How experienced is each person?
• How long will grafts spend outside the body, and how are they stored during the procedure?
• What is your approach to hairline design for my age and face shape?
• Which complications do you see most often in your own practice, and how do you manage folliculitis, swelling and poor growth when they occur?
• What medicines, supplements or habits should I discuss with my regular doctor before surgery?
• What does the washing and aftercare routine look like day by day, and when can I exercise, swim, wear a helmet or color my hair?
• What follow-up is included, how is it delivered, and whom do I contact out of hours if something worries me?
• How do you handle areas that grow unevenly after a year? Is a touch-up procedure a realistic possibility given my donor supply?
• Do you recommend any medical treatment for my remaining native hair, and who would prescribe and monitor it?

Notice what is missing: nothing about technique names or equipment models. Those questions produce marketing answers. The ones above produce clinical answers, and a team that welcomes them is a team taking your safety seriously. Write down what you are told, and if any answer is vague about numbers, ask again.

When to call your doctor after a DHI hair transplant

Most of what you will feel in the first weeks is expected: tightness, itching, mild aching, soft swelling, crusting and numbness. A short list of signs falls outside that range and should prompt a call the same day to your surgical team or, if they are unavailable, to a local doctor or urgent care service.

Red-flag signs that need prompt review:

• Fever, chills or feeling generally unwell in the first two weeks.
• Redness that spreads outward from the scalp, feels hot, or tracks toward the face or neck.
• Pus, foul-smelling discharge or a wound that reopens.
• Pain that increases after the first two or three days rather than easing, or pain that is not controlled by what your team advised.
• Bleeding that does not stop with ten minutes of gentle pressure.
• Swelling that is one-sided, hard, rapidly worsening, or that interferes with opening your eyes or with vision.
• A patch of scalp that turns dark, gray or black, or skin that looks like it is breaking down: possible signs of poor blood supply that need urgent assessment (NIH, PMC).
• Widespread pimples with pus, or a cluster of bumps that keeps enlarging (Cleveland Clinic).
• Difficulty breathing, facial swelling beyond the eyelids, hives or dizziness, which could indicate an allergic or medication reaction: seek emergency care.

Later concerns deserve a routine appointment rather than an emergency call: numbness that has not improved after several months, a cyst or bump that persists beyond the shedding phase, visible donor thinning, or an area of very sparse growth once you pass the one-year mark (NHS).

If in doubt, call. Teams would far rather reassure you about a harmless crust than treat an infection that was left for a week. And every decision about medicines, further procedures or revisions belongs with the clinicians who examined your scalp, not with a search engine.

Frequently asked questions

What are the most common DHI hair transplant side effects?

Temporary swelling of the forehead and around the eyes, scabbing, itching, numbness and mild pain are the most common effects in the first two weeks. Later, some people develop folliculitis, shed nearby native hair through shock loss, or notice patchy regrowth that evens out over the first year. Serious infection and skin breakdown are rare.

Is swelling after hair transplant dangerous?

Usually not. Soft, painless, symmetrical swelling that peaks around day three or four and drains over about a week is an expected response to anesthetic fluid and inflammation. Swelling that is hot, tender, one-sided, rapidly worsening or accompanied by fever is different and should be reviewed the same day, as it can signal infection.

How do I know if folliculitis after hair transplant is infected?

Sterile folliculitis produces scattered small red or white bumps that are mildly tender and settle as trapped hairs emerge. Bacterial folliculitis tends to be more painful, may spread, forms pus and can come with fever or swollen glands. Because the two look alike early on, widespread or worsening bumps should be assessed rather than squeezed or self-treated.

Why is my hair growing back unevenly after DHI?

Each transplanted follicle restarts on its own schedule after shedding, so regrowth arrives in waves and looks patchy between roughly month three and month eight. Shock loss of surrounding native hair adds to the uneven appearance. True poor growth from damaged or poorly supplied grafts can only be judged fairly after about a year.

DHI vs FUE risks: is one actually safer?

The evidence does not show a clear overall safety advantage for either. Both use the same harvesting punch, so donor scarring, swelling and infection risks match. DHI may shorten the time grafts spend outside the body but demands careful depth control to avoid buried grafts. Surgeon experience and conservative planning influence risk far more than the placement tool.

Does DHI leave scars?

Yes, in the donor area. Each follicular unit is removed with a small circular punch that heals into a pale dot. These are usually hidden once hair regrows to a few millimeters but can be visible with a very close shave, particularly on darker skin or in people prone to keloids. The recipient area rarely scars noticeably.

How long after a DHI hair transplant can I exercise?

General hair transplant guidance suggests avoiding strenuous exercise for about a month, mainly to prevent sweating, raised blood pressure and friction from disturbing grafts and to limit swelling. Light walking is usually fine within days. Your surgical team will give a specific timeline based on how your scalp is healing, and theirs is the one to follow.

Can a DHI hair transplant cause permanent hair loss?

It can contribute to permanent thinning in two situations. Overharvesting the donor area removes follicles that never return, and shock loss can push already miniaturizing native hairs into a resting phase from which some do not recover. Both risks are reduced by conservative graft numbers, spreading extraction across the safe donor zone, and realistic planning.

Who should not have a DHI hair transplant?

People with active inflammatory or scarring scalp conditions, hair loss from a temporary or treatable cause, diffuse thinning that includes the donor area, or alopecia areata are usually advised against it. Young adults with progressing loss are often asked to wait. Uncontrolled diabetes, bleeding disorders, keloid tendency and heavy smoking all warrant careful discussion with the treating team.

When should I worry after a DHI hair transplant?

Call your team the same day for fever, spreading or hot redness, pus, pain that worsens after day three, bleeding that does not stop with pressure, hard or one-sided swelling, or any patch of scalp turning dark. Seek emergency care for breathing difficulty, hives or facial swelling beyond the eyelids. Persistent numbness or cysts months later deserve a routine appointment.

References

• NHS: Hair transplant
• MedlinePlus: Hair transplant
• Cleveland Clinic: Folliculitis
• NIH PMC: Complications in Hair Transplantation (Journal of Cutaneous and Aesthetic Surgery)

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.