How can i tell if my 7mo old child has hand foot mouth disease; there have been 3 cases in his class ?

Ulcers: Caused by a virus, ulcers in the mouth are a good clue.Occasionally blisters on the hands and feet, but not always. Other sx may include fever, diarrhea, sore throat, and congestion. A good physical exam by the pediatrician can make this diagnosis. Remember that antibiotics do not cure this infection.

Very infectious: Tender vesicles in mouth, tongue, back of hand, some have rash on feet. This is a viral condition.

Oral ulcers,skin ras: He may get ulcerative lesions in the mouth that are painful and small vesicular lesions one the fingers, plams , toes and soles of the feet. There is usally a 3-6 day incubation period from exposure till lesions appear.