Differential Diagnosis for Irregularly Shaped, Red, Dry Patch with Satellite Small Erythematous Papules
- Single Most Likely Diagnosis
- Candidiasis (Intertrigo): This condition is characterized by red, dry patches with satellite papules, often found in intertriginous areas. The presence of small erythematous papules around the main lesion is a classic sign of candidiasis.
- Other Likely Diagnoses
- Seborrheic Dermatitis: Although it typically presents with a greasy, yellowish scale, seborrheic dermatitis can sometimes appear as dry, red patches, especially when treated with harsh products. Satellite papules are less common but can occur.
- Contact Dermatitis: Allergic or irritant contact dermatitis can cause red, dry patches with satellite papules, depending on the offending agent and individual reaction.
- Psoriasis: While psoriasis is known for its well-defined, scaly plaques, some forms like inverse psoriasis can present with red, dry patches in intertriginous areas, occasionally with satellite lesions.
- Do Not Miss Diagnoses
- Squamous Cell Carcinoma: Although less likely, any persistent, irregularly shaped red patch, especially with satellite lesions, warrants consideration of skin cancer. Biopsy may be necessary to rule out malignancy.
- Infectious Diseases (e.g., Ringworm, Impetigo): Certain infectious diseases can present with similar symptoms and must be considered, especially if the lesion is not responding to typical treatments or if there are signs of infection like pus or increasing redness.
- Rare Diagnoses
- Darier's Disease: A rare genetic disorder that can cause red, dry patches, but it typically includes other distinctive features like greasy, crusted papules and nail changes.
- Granuloma Gluteale Infantum: A rare condition seen in diaper areas, characterized by reddish-brown plaques and nodules, which could be considered in the differential for red, dry patches with satellite lesions in this specific context.