Why do fingernails fall off after recovering from hand, foot, and mouth disease?

Patient's question:

The fingernails of the child are peeling off one by one, sometimes even bleeding. How can we alleviate the child's pain? After a child fully recovers from hand, foot, and mouth disease, why do the fingernails peel off?

Doctor's answer:

Hand, foot, and mouth disease is a skin condition caused by enterovirus infection, leading to recurrent vesicular rashes on the skin of the hands, feet, and mouth, often accompanied by fever. Enterovirus antibody tests are typically positive. During the rash stage, there is a certain level of infectivity, and transmission is possible through close contact. If the rash has healed, it will no longer be contagious. Severe cases of hand, foot, and mouth disease may lead to complications such as viral myocarditis or nail loss. Maintaining good hygiene and preventing secondary infections can help manage the condition.

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