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Granuloma annulare is a benign skin condition characterized by small, raised bumps that form a ring with a normal or sunken center. The cause of granuloma annulare is unknown and it is found in patients of all ages. The condition tends to be seen in otherwise healthy people. Sometimes it is associated with diabetes or thyroid disease.
The following are the most common signs or symptoms of granuloma annulare. However, each individual may experience symptoms differently:
Yellowish or skin-colored to red bumps
One or several rings of bumps on feet, legs, or hands
The eruptions can be confined to one area (less than 10 lesions) or spread to multiple areas (greater than 10 lesions)
Lesions may be present for years
The symptoms of granuloma annulare may resemble other skin conditions. Always consult your doctor for a diagnosis. You should contact your health care provider if you have a ring anywhere on your skin that lasts more than a few weeks.
In addition to a complete medical history and physical examination, diagnosis is usually confirmed with a skin biopsy (removing a small sample of tissue for examination under a microscope).
Specific treatment for granuloma annulare will be determined by your doctor based on:
Your age, overall health, and medical history
Extent of the condition
Your tolerance for specific medications, procedures, or therapies
Expectations for the course of the condition
Your opinion or preference
Because granuloma annulare usually causes no symptoms and clears up by itself, you may not need treatment (except for cosmetic reasons). If you do receive treatment, it may include corticosteroids (cream, tape, or injections). Some doctors use liquid nitrogen to freeze the bumps. Other treatments, such as dapsone, retinoids, and niacinamide, may be considered for widespread granuloma annulare. Since these treatments carry the risk of toxicity, a consultation with a dermatologist is usually advised. Most granuloma annulare rashes resolve without treatment within two years; however, it is not uncommon to have new rings appear years later.
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