Dermatology Acne Vulgaris / Rosacea Acne Vulgaris--Differential Diagnosis

Differential Diagnosis of Acne Vulgaris
Diagnosis Age of Onset Important Factors Location Clinical
Acne rosacea 30-50 yr Slow onset aggravated by cold, ethel alcohol, hot foods, stress; unknown etiology Central face Erythema, telangiectasias, papules/postules; can present with rhinophyma or chronic eye inflammation
Perioral dermatitis Primarily adult women Sometomes associated with prolonged use of high potency topical steroids Chin, perioral and nasolabial folds Erythramatous, sometimes scaly 1-2mm papules; may progress to diffuse, scaly, yellow-red plaques
Gram-negative Any age Can be seen with long-term antibiotic therapy A. Nose and mouth areas (common)
B. Neck (uncommon)
A. Superficial postules
B. Large nodules
Steroid acne Teenage to adult years Associated with oral corticosteroid therapy Chest, upper arms, and scalp Small, monomorphic papules, pustules, or closed comedoes