Overview
Granuloma annulare is a benign, chronic skin condition characterized by ring-shaped or circular patches on the skin. These lesions are usually raised, firm, and smooth, and they often appear on the hands, feet, elbows, or knees. The condition is not contagious and is generally harmless. In many cases, granuloma annulare resolves on its own without treatment.
Symptoms
Symptoms of granuloma annulare are primarily skin-related and may vary in appearance and extent. Common symptoms include:
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Circular or ring-shaped bumps on the skin
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Skin-colored, red, or slightly purple lesions
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Firm and smooth texture of the affected area
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Mild itching or tenderness in some cases
The lesions are usually painless and may remain localized or spread over larger areas of the body.
Causes
The exact cause of granuloma annulare is not fully understood. It is believed to result from an immune system reaction that affects collagen in the skin. Potential triggers include:
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Minor skin injuries
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Insect bites
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Certain infections
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Sun exposure
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Underlying medical conditions such as diabetes in some individuals
In many cases, no specific trigger is identified.
Risk Factors
Several factors may increase the likelihood of developing granuloma annulare, including:
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Young age, especially children and young adults
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Female sex
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History of diabetes or thyroid disease
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Minor skin trauma
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Family history of similar skin conditions
The condition can occur in people of all ages.
Complications
Granuloma annulare rarely leads to serious complications. However, possible concerns include:
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Persistent or recurring skin lesions
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Cosmetic discomfort or self-consciousness
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Widespread involvement in rare generalized forms
The condition does not typically cause scarring or long-term skin damage.
Prevention
There is no guaranteed way to prevent granuloma annulare, but certain measures may help reduce flare-ups:
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Protecting the skin from injuries and excessive sun exposure
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Managing underlying health conditions effectively
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Seeking medical advice for persistent or spreading skin lesions
Regular skin care and monitoring can help manage symptoms and support overall skin health.
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