Differential Diagnosis for Multiple Dry Skin Pustules
- Single most likely diagnosis
- Acne: The presence of multiple dry skin pustules is highly suggestive of acne, particularly given its prevalence and the common presentation of comedones (blackheads and whiteheads) alongside inflammatory lesions like pustules.
- Other Likely diagnoses
- Folliculitis: An inflammation of the hair follicles, which can present with pustules, especially if caused by bacterial or fungal infections. It's a common condition that can resemble acne but is typically more localized and associated with hair-bearing areas.
- Keratosis Pilaris: A condition characterized by the appearance of small, rough, sandpapery bumps or pustules on the skin, often on the arms, legs, buttocks, and cheeks. It's associated with dry skin and can be exacerbated by dry environments.
- Eczema (Atopic Dermatitis): While eczema is more commonly associated with itchy, inflamed skin, certain types like nummular eczema can present with coin-shaped patches of dry, scaly skin that may include pustules.
- Do Not Miss (ddxs that may not be likely, but would be deadly if missed.)
- Staphylococcal Scalded Skin Syndrome (SSSS): A serious condition caused by staphylococcal toxins that typically affects infants and young children, but can rarely occur in adults. It presents with widespread skin lesions, including pustules, and can progress to severe skin exfoliation.
- Pustular Psoriasis: A rare type of psoriasis that can present with widespread pustules on the skin, often accompanied by systemic symptoms like fever. It requires prompt recognition and treatment to prevent serious complications.
- Rare diagnoses
- Subcorneal Pustular Dermatosis: A rare skin condition characterized by the sudden onset of sterile pustules, typically on the trunk, that may be associated with systemic diseases or medications.
- Acute Generalized Exanthematous Pustulosis (AGEP): A rare, drug-induced condition that presents with numerous small, sterile pustules on the skin, often accompanied by fever and systemic symptoms. It's a medical emergency due to the risk of severe complications.