Conversation: The conversation between human and AI assistant.
[|Human|] Our grand-daughter has welts/ hives on her stomach bottom and legs. The come out of no where and for the past two days they have cropped up in the late evening. Today they have cropped up in the afternoon and are only on her lower legs. She usually runs a fever when these welts come out and the welts sill all run together to form one large welt. By morning they are usually better. Someone has suggested foot hand and mouth virus . How long can something like this last?
[|AI|]  Hello, welcome to Chat Doctor thanks for the query it may be allergic reaction to a variety of things like foods, medications, irritants such as soap, detergent, clothing material, or grass. They can also get hives during a normal illness such as a cold or fever which probably your case is. Because this is an allergic reaction, you need to observe your child for other signs of a severe allergic reaction such as throat tightness, wheezing, breathing difficulty, or persistent vomiting. If any of these happens then consult the doctor immediately if she is going in fever you consult the doctor for it. She may need paracetamol syrup and Ben Chat Doctor.