Ingrown Toenail

What is ingrown toenail?

An ingrown toenail is a common condition in which the edge or corner of a toenail grows into the soft skin next to it, rather than growing straight out over the skin. Doctors sometimes call this condition onychocryptosis, which simply means “hidden nail.” In the medical coding system used by hospitals, it is listed under the code ICD-10 L60.0. It most often affects the big toe, although any toenail can become ingrown.

When the nail edge presses into or pierces the surrounding skin, the body reacts as it would to any foreign object. The area becomes red, swollen, and painful, and in some cases it can become infected. For many people an ingrown toenail is a mild, temporary problem, but for others it becomes a recurring or chronic issue that interferes with walking, wearing shoes, and daily activities.

Ingrown toenails can affect people of any age. They are especially common in teenagers and young adults, whose feet may sweat more and whose nails are often trimmed too short or rounded at the corners. Older adults are also affected, partly because nails tend to thicken with age and become harder to trim properly. People with diabetes, poor circulation, or a weakened immune system need to take the condition especially seriously, because even a small break in the skin of the foot can lead to complications in these groups. In hospital settings, the condition is usually managed by dermatology (skin specialists), podiatry (foot specialists), or general and orthopedic surgery departments; at Acibadem, for example, patients with this condition are typically seen in dermatology or orthopedic outpatient clinics.

Symptoms

Ingrown toenail symptoms usually develop gradually and tend to worsen if the underlying cause is not addressed. In the earliest stage, you may notice only mild tenderness when you press on the side of the toe or wear tight shoes. As the nail continues to push into the skin, the discomfort becomes more constant and visible signs of inflammation appear.

Common ingrown toenail symptoms include:

• Pain and tenderness along one or both sides of the toenail, often worse with pressure from shoes, socks, or bedding
• Redness of the skin next to the nail
• Swelling of the skin fold beside the nail, sometimes making the toe look puffy
• Warmth in the affected area
• A feeling of pressure under or beside the nail
• Fluid or pus drainage if infection develops
• Overgrowth of soft, moist tissue (called granulation tissue) over the nail edge in longstanding cases
• Bleeding from the nail fold, especially in more advanced stages

Doctors often describe ingrown toenails in three stages, and symptoms differ by stage. In stage one (mild), there is redness, slight swelling, and pain when the toe is pressed, but the skin is intact. In stage two (moderate), the pain increases, the swelling is more obvious, and there may be drainage of clear fluid or pus, which suggests infection. In stage three (severe or chronic), the body forms granulation tissue — a raw, red, easily bleeding overgrowth of skin — that grows over the edge of the nail. At this stage the toe may be persistently painful, may drain fluid regularly, and often cannot heal on its own without a procedure.

It is worth noting that infection is not always present. Many ingrown toenails are inflamed but not infected. However, the two can be difficult to tell apart at home, and any spreading redness, increasing pain, pus, or fever suggests that infection may be developing.

Causes and risk factors

Understanding ingrown toenail causes is helpful because many of them can be corrected, which reduces the chance of the problem coming back. In most cases, an ingrown toenail develops when something changes the normal relationship between the nail plate (the hard part of the nail) and the nail folds (the skin along the sides of the nail).

Common causes and contributing factors include:

• Improper nail trimming. Cutting toenails too short or rounding the corners is one of the most frequent causes. When the corner of the nail is cut away, the surrounding skin can fold over the nail edge, and the nail then grows into that skin.
• Tight or poorly fitting footwear. Shoes with narrow toe boxes, high heels, and tight socks or stockings press the skin against the nail edge and encourage the nail to grow into the skin.
• Injury to the toe. Stubbing the toe, dropping something on it, or repeated small injuries from activities such as running, soccer, or ballet can damage the nail and change how it grows.
• Naturally curved or fan-shaped nails. Some people inherit nails that curve strongly downward at the edges (sometimes called pincer nails) or that are wide relative to the toe, making ingrowth more likely.
• Sweaty or moist feet. Moisture softens both the nail and the surrounding skin, making it easier for the nail edge to pierce the skin. This is one reason the condition is common in teenagers and athletes.
• Nail infections or nail disease. Fungal infections can thicken or distort the nail, and thickened nails are harder to trim and more likely to grow abnormally.
• Certain medical conditions and medications. Diabetes, obesity, swelling of the feet, and some medicines that affect nail growth can increase risk.
• Family history. Ingrown toenails often run in families, likely because nail shape is inherited.

In many patients, more than one factor is involved — for example, a person with naturally curved nails who also trims them short and wears tight shoes is at particularly high risk.

Diagnosis

Ingrown toenail diagnosis is usually straightforward and clinical, which means the doctor can confirm the condition simply by examining the toe and asking about your symptoms. No blood tests, imaging, or laboratory studies are needed in most cases. During the examination, the doctor looks at where the nail edge meets the skin, checks for redness, swelling, drainage, and granulation tissue, and gently presses the area to assess tenderness. The doctor will also ask how long you have had symptoms, whether this has happened before, how you trim your nails, and what footwear you use.

The doctor will typically assign a stage (mild, moderate, or severe) based on what they see, because the stage guides treatment. They will also check for signs of infection, such as pus, spreading redness, or warmth extending beyond the nail fold.

Additional tests are reserved for specific situations:

• Wound culture. If there is significant infection, especially one that has not responded to initial treatment, a sample of the drainage may be sent to a laboratory to identify the bacteria and choose an appropriate antibiotic.
• X-ray. An X-ray is not needed for a typical ingrown toenail, but it may be ordered if the doctor suspects a bone infection (osteomyelitis) in a longstanding or deep infection, a fracture after an injury, or a bone growth under the nail that could mimic or contribute to the problem.
• Blood tests. These are occasionally used in patients with diabetes or a suppressed immune system when a serious infection is suspected.
• Nail clippings for fungal testing. If the nail is thickened or discolored, the doctor may test for fungal infection, since treating the fungus can help prevent recurrence.

The doctor will also consider other conditions that can look similar, such as a small tumor under the nail, a wart, gout affecting the toe joint, or a simple bacterial skin infection (paronychia) without true nail ingrowth. A careful examination usually distinguishes these.

Treatment options

Ingrown toenail treatment depends on the stage of the condition, whether infection is present, and whether the problem is occurring for the first time or keeps coming back. Your doctor may recommend one or a combination of the approaches below.

Home care and watchful waiting

Mild, early-stage ingrown toenails often improve with conservative care at home. Typical measures include:

• Soaking the foot in warm water for 10 to 20 minutes, several times a day, to soften the skin and reduce swelling. Some doctors suggest adding mild soap or Epsom salt.
• Keeping the foot clean and dry between soaks.
• Gently lifting the ingrown nail edge and placing a small piece of clean cotton, dental floss, or a splint under it, so the nail grows above the skin edge rather than into it. This should be done carefully and only if it does not cause significant pain; your doctor or nurse can show you how.
• Wearing open-toed shoes, sandals, or roomy footwear until the toe heals.
• Taking over-the-counter pain relievers such as acetaminophen or ibuprofen, if these are safe for you, to reduce pain and inflammation.

People with diabetes, poor circulation, or nerve damage in the feet (neuropathy) should not attempt home treatment without medical guidance, because minor foot problems can worsen quickly in these conditions.

Medication

If the toe is infected, the doctor may prescribe a topical antibiotic (applied to the skin) or, for more significant infections, an oral antibiotic (taken by mouth). It is important to understand that antibiotics treat the infection but do not fix the underlying mechanical problem of the nail growing into the skin. If the nail edge remains embedded, symptoms often return once the antibiotic course ends, and a procedure may still be needed.

Office procedures and surgery

For moderate to severe ingrown toenails, or for those that keep recurring, a minor procedure is often the most effective treatment. These procedures are typically done in an outpatient clinic under local anesthesia, meaning the toe is numbed with an injection while you stay awake. Common options include:

• Partial nail avulsion. The doctor removes the ingrown strip of nail along the affected side, leaving the rest of the nail in place. This relieves pressure and allows the inflamed skin to heal. The removed portion regrows over several months, and in some cases the problem can return.
• Partial nail avulsion with matrixectomy. In addition to removing the nail strip, the doctor treats the nail matrix — the tissue at the base of the nail from which it grows — on that side, so the removed strip does not grow back. This is often done with a chemical such as phenol, or with electrical or surgical techniques. Matrixectomy substantially lowers the chance of recurrence and is often recommended for repeated ingrown toenails.
• Total nail avulsion. Removal of the entire nail is reserved for severe or unusual cases, such as significantly deformed or diseased nails. The nail may take many months to regrow, and it can grow back with an abnormal shape.
• Removal of granulation tissue. In chronic cases, the overgrown tissue at the nail edge may be removed or treated during the same procedure.

After a procedure, the toe is bandaged and you are usually advised to keep it clean and dry, elevate the foot when resting, wear loose footwear, and change dressings as instructed. Most people can return to normal walking within a few days, though full healing of the nail fold often takes a few weeks. Your doctor will give you specific aftercare instructions based on the procedure performed.

Living with ingrown toenail and outlook

The outlook for an ingrown toenail is generally good. Mild cases often heal completely with home care within one to two weeks, and procedures are effective for more advanced or recurrent cases. However, recurrence is possible, particularly in people with strongly curved nails, and no treatment can guarantee the problem will never return. Procedures that include matrixectomy tend to have a lower recurrence rate than nail removal alone, which is why doctors often recommend them for repeat episodes.

Day to day, several habits can reduce the chance of another ingrown toenail:

• Trim toenails straight across, and avoid cutting them too short or rounding the corners deeply. The nail edge should generally reach the tip of the toe.
• Wear shoes with enough room in the toe box, and avoid consistently tight socks or hosiery.
• Keep feet clean and dry, and change socks regularly if your feet sweat heavily.
• Protect your toes during sports or manual work, using appropriate footwear.
• Check your feet regularly, especially if you have diabetes or reduced feeling in your feet, and seek care early for any redness, swelling, or breaks in the skin.

People with diabetes or circulation problems should have foot care managed with professional support, since even minor nail problems can lead to serious infections in these groups. Regular visits to a podiatrist or foot-care nurse for nail trimming may be advisable. Where hospital care is needed, ingrown toenails are commonly managed in dermatology or podiatry-oriented clinics; at Acibadem this care is coordinated through the relevant outpatient departments.

Frequently asked questions

What is an ingrown toenail, exactly?

An ingrown toenail is a condition in which the corner or side of a toenail grows into the soft skin beside it instead of over it. The medical term is onychocryptosis, and it is recorded under the code ICD-10 L60.0. It most often affects the big toe and causes pain, redness, and swelling along the nail edge, sometimes with infection.

Can an ingrown toenail heal on its own?

Mild, early ingrown toenails often improve with simple home care such as warm soaks, wearing roomy footwear, and gently lifting the nail edge. However, more advanced cases — especially those with pus, significant swelling, or overgrown tissue at the nail edge — usually do not heal on their own and often need medical treatment, sometimes including a minor procedure.

How serious is an ingrown toenail?

For most healthy people, an ingrown toenail is uncomfortable but not dangerous, and it responds well to treatment. It becomes more serious if infection spreads beyond the nail fold, or if the person has diabetes, poor circulation, or a weakened immune system, because these conditions raise the risk of deeper infection, including infection of the bone in rare cases. Anyone in these higher-risk groups should seek medical care early rather than treating the toe at home.

What does ingrown toenail treatment involve?

Treatment depends on how advanced the condition is. Mild cases are often managed with warm soaks, footwear changes, and pain relievers. Infected cases may need antibiotics. Moderate, severe, or recurring cases are commonly treated with a minor outpatient procedure under local anesthesia, in which the ingrown strip of nail is removed; in recurrent cases, the doctor may also treat the nail root on that side so the strip does not regrow.

Is ingrown toenail surgery painful, and how long is recovery?

The procedure itself is done after the toe is numbed with a local anesthetic, so most patients feel pressure rather than pain during it. Some soreness is common for a few days afterward and can usually be managed with over-the-counter pain relievers if these are appropriate for you. Many people return to normal walking within a few days, while complete healing of the nail fold often takes a few weeks. Your doctor will advise you based on the specific procedure performed.

Why do I keep getting ingrown toenails?

Recurring ingrown toenails are often related to nail shape, which can be inherited, or to habits such as trimming nails too short, rounding the corners, or wearing tight shoes. Thickened nails, fungal infections, sweaty feet, and repeated toe injuries from sports can also contribute. If the problem keeps returning despite good nail care, a doctor may recommend a procedure that permanently narrows the nail on the affected side to reduce recurrences.

How can I tell if my ingrown toenail is infected?

Signs that suggest infection include increasing pain, spreading redness, warmth, swelling, pus or cloudy fluid draining from the nail fold, and sometimes fever. An ingrown toenail can be inflamed without being infected, but the two can be hard to distinguish at home, so worsening symptoms are a reason to have the toe examined by a health professional.

When to see a doctor

Many mild ingrown toenails can be managed at home, but medical care is important in certain situations. See a doctor promptly if:

• Pain is severe, worsening, or not improving after a few days of home care
• There is pus or cloudy drainage from the nail fold
• Redness is spreading beyond the toe or up the foot
• You develop a fever or chills along with the toe symptoms
• Raw, easily bleeding tissue has grown over the nail edge
• You have diabetes, poor circulation, or reduced feeling in your feet — in this case, seek care for any ingrown toenail, even a mild one, rather than treating it yourself
• You have a weakened immune system, for example due to medication or illness
• The problem keeps coming back despite careful nail trimming and footwear changes

Seeking care early usually means simpler treatment, faster relief, and a lower risk of complications. A doctor can confirm the diagnosis, treat any infection, and discuss whether a minor procedure is appropriate for your situation.