Guttate psoriasis following presumed coxsackievirus A.

Guttate psoriasis is a variant of psoriasis characterized by small, 2- to 10-mm, raindroplike lesions on the skin. Guttate psoriasis is commonly triggered by group A streptococcal pharyngitis. We describe a novel case of guttate psoriasis following presumed coxsackievirus A hand-foot-and-mouth disease (HFMD). A 56-year-old woman presented with a vesicular erythematous rash on the hands, feet, and lips. The patient was clinically diagnosed with coxsackievirus A infection after presenting with a sore throat and a new-onset rash that lasted for 1 to 2 days. Physical examination revealed vesicles in the oral cavity and erythematous vesicles and papules on the extensor surfaces of the hands and feet. One month later, the patient returned citing new red skin lesions on the abdomen and groin. A clinical diagnosis of guttate psoriasis was made, which was confirmed via biopsy of an abdominal skin lesion. The patient denied any history of psoriasis.