Differential Diagnosis for Perioral Dermatitis
- Single Most Likely Diagnosis
- Rosacea: This is the most likely diagnosis due to the similar presentation of perioral dermatitis, which includes papules, pustules, and erythema around the mouth. Rosacea is a common condition that can be easily mistaken for perioral dermatitis.
- Other Likely Diagnoses
- Acne vulgaris: Acne can present with similar lesions around the mouth and can be difficult to distinguish from perioral dermatitis.
- Contact dermatitis: Irritant or allergic contact dermatitis can cause a rash around the mouth, especially if the patient is using a new skincare product or makeup.
- Seborrheic dermatitis: This condition can cause a red, itchy rash on the face, including around the mouth.
- Do Not Miss Diagnoses
- Lupus miliaris disseminatus faciei (LMDF): Although rare, LMDF is a granulomatous condition that can present with perioral lesions and can be mistaken for perioral dermatitis. Missing this diagnosis can lead to delayed treatment and potential scarring.
- Sarcoidosis: Sarcoidosis is a systemic disease that can cause skin lesions, including perioral lesions. Missing this diagnosis can lead to delayed treatment of a potentially serious condition.
- Rare Diagnoses
- Granulomatous perioral dermatitis: A rare variant of perioral dermatitis characterized by granulomatous lesions.
- Melkersson-Rosenthal syndrome: A rare neurocutaneous disorder that can cause perioral lesions, facial paralysis, and other symptoms.
- Perioral dermatitis-like lesions in immunosuppressed patients: Certain infections, such as histoplasmosis or cryptococcosis, can cause perioral lesions in immunosuppressed patients.