Table 1.

Key diagnostic features of acne vulgaris, drug-induced acne, and Malassezia Folliculitis.

Feature	Acne Vulgaris	Drug-induced acne	Malassezia Folliculitis
Lesion Characteristics	Comedones, papules, pustules, nodules, and cysts	Erythematous papules or pustules, without comedones	Erythematous papules or pustules, without comedones
Associated Symptoms	Mild or no pruritus	No pruritus	Pruritus
Distribution	Seborrheic areas (face, chest, back)	Non-seborrheic areas (limbs, buttocks)	Seborrheic areas (face, chest, back)
Precipitating Factors	No specific exposure; associated with hormones and bacteria	Specific medication use (corticosteroids, androgens)	Immunosuppression or antibiotic use
Treatment Response	Responsive to antibiotics	Requires drug discontinuation; may respond to antibiotics	Responsive to antifungal therapy