Acromegaly

Overview

Acromegaly is a rare hormonal condition that happens when the body produces too much growth hormone in adulthood. Growth hormone is made by the pituitary gland, a small gland at the base of the brain that helps regulate many body functions. In most adults with acromegaly, the excess hormone is related to a non-cancerous growth in the pituitary gland.

Because adults have already finished growing, excess growth hormone does not make them taller. Instead, it can cause gradual enlargement of the hands, feet, facial features and certain internal tissues. These changes often develop slowly over many years, so the condition may not be noticed right away. Early recognition and specialist care can help manage symptoms and reduce the risk of long-term complications.

Symptoms

Symptoms of acromegaly usually appear gradually. Some people notice changes in appearance, while others first experience general health problems or symptoms caused by pressure from a pituitary growth.

• Enlarged hands or feet, such as rings or shoes becoming tight
• Coarser facial features, including a more prominent jaw, brow or nose
• Widening spaces between the teeth or changes in bite
• Thickened or oily skin, increased sweating or skin tags
• Headaches
• Vision changes, especially loss of side vision
• Joint pain, stiffness or carpal tunnel-type symptoms
• Fatigue, weakness or reduced exercise tolerance
• Snoring or interrupted breathing during sleep
• Changes in menstrual cycles or sexual function
• Enlargement of the tongue or voice changes

Acromegaly can also be associated with other health concerns, such as high blood pressure, heart strain, blood sugar problems and colon polyps. Not everyone has the same symptoms, and the severity can vary.

Causes and Risk Factors

Acromegaly is caused by long-term exposure to too much growth hormone. In most cases, this occurs because of a benign pituitary adenoma. This type of growth is not cancer, but it can produce excess hormone and may press on nearby structures in the brain, such as the nerves involved in vision.

Less commonly, excess growth hormone may be caused by a tumor outside the pituitary gland that affects hormone signals. This is uncommon and requires specialist evaluation.

Acromegaly is usually diagnosed in middle adulthood, but symptoms may have been present for years before recognition. Most cases are not inherited. However, in rare situations, acromegaly can be part of a genetic condition that runs in families. A doctor may consider family history and other findings when deciding whether further genetic evaluation is needed.

Diagnosis

Diagnosis is made by an endocrinologist using medical history, physical examination and specific tests. Because the symptoms develop slowly and can resemble other conditions, testing is important to confirm whether growth hormone levels are truly abnormal.

• Blood tests may be used to assess growth hormone activity and related hormone levels.
• A glucose suppression test may be performed to see whether growth hormone levels respond normally.
• Magnetic resonance imaging may be used to look for a pituitary adenoma and assess its size and position.
• Eye examinations may be recommended if there are vision symptoms or if a pituitary growth is near the optic nerves.
• Additional tests may check heart health, blood sugar, sleep-related breathing problems, joint issues or colon health, depending on the individual situation.

The diagnostic process helps doctors understand the cause of hormone excess, its effects on the body and the most appropriate treatment approach.

Treatment Options

Treatment for acromegaly aims to lower excess growth hormone activity, manage the pituitary growth and reduce symptoms and complications. The best plan depends on the size and location of the pituitary adenoma, hormone levels, symptoms, age, general health and patient preferences.

Surgery is often considered when a pituitary adenoma is the cause, especially if it is accessible and causing pressure-related symptoms. The operation is usually performed through the nose using specialized techniques. The goal is to remove as much of the hormone-producing tissue as safely possible.

Medication may be recommended when surgery is not suitable, when hormone levels remain high after surgery or while preparing for other treatments. Different types of medicines can help reduce growth hormone production, block its effects or control the pituitary adenoma. The choice of medication is individualized by an endocrinology specialist.

Radiation therapy may be considered in selected cases, particularly if surgery and medication do not adequately control the condition. Its effects may develop gradually over time, so ongoing follow-up is needed.

Long-term monitoring is an important part of care. Follow-up may include hormone testing, imaging, vision checks and screening for related health conditions. Support from a multidisciplinary team may involve endocrinologists, neurosurgeons, radiologists, ophthalmologists, cardiologists, sleep specialists and other professionals when needed.

When to See a Doctor

Medical evaluation is recommended if you notice gradual changes such as enlarging hands or feet, facial changes, new gaps between teeth, persistent headaches, vision problems, excessive sweating or unexplained joint pain. These symptoms do not always mean acromegaly, but they should be assessed, especially if they are progressive.

Seek prompt medical attention if you develop sudden or worsening vision changes, severe headache, fainting, confusion or other concerning neurological symptoms. People already diagnosed with acromegaly should keep regular follow-up appointments and report new symptoms to their healthcare team.

Acromegaly is a complex endocrine condition, but it can be evaluated and managed with specialist care. Early discussion with a doctor can help clarify the cause of symptoms and guide appropriate next steps.