What is the incubation period for hand, foot and mouth disease?

Incubation is the interval between contact with the virus and the first noticeable symptoms. A child can seem well during this time. Fever, throat discomfort, tiredness, or appetite changes may come before mouth sores and a hand or foot rash. The exact timing is not predictable for every child, and a known exposure does not prove that later symptoms have the same cause.

Record the date of a possible exposure and watch for changes in drinking, feeding, energy, temperature, and skin or mouth appearance. Encourage handwashing with soap and water, especially after toileting or nappy changes. Do not share cups, utensils, towels, toothbrushes, or pacifiers. Clean frequently touched surfaces and keep a symptomatic child home from group activities according to local childcare guidance.

Seek medical advice if the child cannot drink comfortably, urinates much less, becomes unusually drowsy, or develops symptoms that are severe or worsening. Get urgent help for breathing difficulty, a seizure, confusion, a stiff neck with severe headache, or difficulty waking the child. Ask for assessment when the rash is unusual, rapidly changing, or associated with a child who looks seriously unwell.

Ask what symptoms to monitor, how to support fluids if mouth sores develop, and when the child can safely return to childcare. Give the clinician the exposure date, first symptom, temperature pattern, and any medical conditions or medicines.