Acromegaly Presenting with Resistant Acne Vulgaris.

Acne vulgaris is one of the most frequent skin diseases worldwide, triggered by multiple endogenous and exogenous factors. Hormones, particularly growth hormone (GH), insulin-like growth factor-1, insulin, CRH, and glucocorticoids, play a major role in the pathogenesis and exacerbation of acne. Excess GH seen in acromegalic patients may result in increased size and function of sweat glands and sebaceous glands, which may contribute to the patient's worsening acne and interfere with dermatologic treatment.