Hand foot mouth is a viral disease caused by a virus.it is generally a self limited disease, it is worse in the begining with lesions/boils
in the mouth.This phase is sometimes associated with fever
.This is followed by lesions in the hand.feet,buttocks .Sometimes it can become widespread and generalised.I would probably give some mild antihistaminies syrup, paracetamol
and topical calamine
creams are not indicated.if the lesions becomes red and pussy a antibiotic cream may be prescribed ( rare situation).In summary it is a benign disease and goes awaywithout any major treatment.I would also advice good hand washing techniques for the carers since it can spread.