 [ Symptoms ] can stomatitis appear on hands  my son is very sick they say it is stomatitis he has infected thumb and two other fingers are infected as well is this normal with stomatitis [ Disease ] i do not know that age of your son but stomatitis is only in the mouth but if he is also having blister like lesions appearing on his hands and the bottom of his feet i would be highly suspicious that he has hand foot and mouth disease a coxsakie virus infection