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This Red, Scaly Patch Won’t Go Away—What Could It Be?
A persistent red, scaly patch on the forehead can be frustrating and concerning, especially when it doesn’t improve over time. Although many skin conditions can cause this type of rash, the appearance alone is usually not enough to determine the exact diagnosis. A proper medical examination is often needed to identify the underlying cause.
One common possibility is seborrheic dermatitis, a chronic inflammatory skin condition that frequently affects oily areas of the face, including the forehead, eyebrows, sides of the nose, and scalp. It often causes redness, flaky white or yellow scales, mild itching, and recurring flare-ups. Stress, cold weather, and certain skin products may make symptoms worse.
Another possible cause is psoriasis, an autoimmune condition that speeds up the growth of skin cells. Facial psoriasis may appear as thick, red patches covered with silvery or white scales, often near the hairline or forehead. While psoriasis is not contagious, it usually requires medical treatment to control symptoms and reduce inflammation.
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A stubborn red patch may also result from eczema (atopic dermatitis) or contact dermatitis, which can develop after exposure to cosmetics, skincare products, hair dyes, fragrances, or other irritants. These conditions often cause redness, dryness, scaling, itching, and sometimes burning or stinging sensations.
In older adults or people with significant sun exposure, a rough, persistent scaly patch could represent actinic keratosis, a precancerous skin lesion caused by years of ultraviolet (UV) damage. Because some actinic keratoses can eventually develop into skin cancer, any patch that persists, enlarges, bleeds, or repeatedly crusts should be evaluated by a healthcare professional.
Doctors diagnose persistent skin patches by reviewing your medical history, examining the affected skin, and, if necessary, performing additional tests such as a skin scraping, fungal testing, or a small skin biopsy. These tests help distinguish between inflammatory skin conditions, fungal infections, allergic reactions, and more serious diseases.
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