My Grand Daughter Contracted Hand, Mouth And Foot Disease A

My grand daughter contracted Hand, Mouth and Foot disease a couple of months ago, the Dr. told us It is not typical to get it a second time. She started with fever and what seems like a sore throat and now has the same rash all over her body. A blister appeared on her face around her mouth and on her arm and has a rash all over her legs and arms? Could it be she has it again??