Hand-foot-and-mouth disease (HFMD) is a common cause of viral rash in children with classic skin findings which are easily recognized by pediatricians. Recently, several atypical cutaneous manifestations of HFMD have been described. Awareness of these patterns may lead providers to appropriate diagnosis and management. This review also highlights the epidemiological patterns of more virulent strains and emerging research in disease prevention.
Classic HFMD presents with tender lesions on the hands, feet, and oral mucosa. Atypical skin findings in HFMD may be seen in children with atopic dermatitis. These include ‘eczema coxsackium’, in which eczematous skin is superinfected with coxsackie virus, resembling herpes infection. Nail changes, such as shedding, may follow HFMD after a latency period. Enterovirus 71 is responsible for epidemic outbreaks of HFMD in Asia, with systemic manifestations and occasionally neurological sequelae. Research is underway to develop a vaccine which could curb epidemics, but for the present, supportive care and hygiene measures are the standard of care.
Atypical manifestations of HFMD in children with atopic dermatitis may mimic herpetic superinfection. In a child presenting with nail changes, consider antecedent HFMD in the differential diagnosis. The mainstay of treatment for HMFD remains supportive care.
aDepartment of Pediatrics
bDepartment of Dermatology, University of North Carolina Hospitals, Chapel Hill, North Carolina, USA
Correspondence to Christopher Nassef, MD, Department of Pediatrics, University of North Carolina Hospitals, 230 MacNider Building, CB# 7593 321 S. Columbia Street, UNC School of Medicine, Chapel Hill, NC 27599-7593, USA. Tel: +1 919 966 3172; e-mail: firstname.lastname@example.org