What is effects of hand and mouth disease for a 3 year old?

Fever/spots/pain: Hfm varies more in intensity than anything. Some kids can have it & run a brief temperature & never show other symptoms. Some have fever, localized spots on their wrists & nothing else. Some have terrible mouth sores, spots on wrists/forearms/legs feet & around the bottom & have cramping & loose stools. So fever, loose stools & cramps, amount & location of blisters seem to be the main variables.

Hand/mouth disease: Hand/foot/mouth is a viral illness usually caused by a virus called a coxsackie virus. Usually we see this in our country in spring/early summer, but can see sporadic cases anytime of year. Child's body will fight this off on its own, so if feeling ok, he can be as active as he feels ok for. He is fighting an illness, though, so insure plenty of rest and fluids. No need for medicines.