Background. Enteroviral infections are common infections, mostly affect children. Nail changes of enteroviral infection including transverse ridging (Beau's lines) and nail shedding (onychomadesis) were described in many countries worldwide.Objective. Conclusions. Our study proved association between the outbreak of onychomadesis (nail shedding) and enteroviral infection, mainly hand-foot-mouth disease, during summer-autumn 2016 in Western Ukraine (Ternopil region). Enteroviral infection was followed by onychomadesis in 4-12 weeks. Clinical features of enteroviral infection were very variable, with prevalence of cutaneous lesions.More studies are necessary to determine the serotype of the virus that causes onychomadesis.