DS2 had bad chicken pox the week before xmas. It's all gone now and there are only a couple of dry scabs left on his scalp, all the others have fallen off. Anyway, the past two days his temp has been up and down and he has been very drowsy - the last two days have been spent with him mostly lying on our chests dropping off to sleep. he's also off his food. Today his temp was nearly normal but he was still very drowsy and has still not eaten anything. Should we be worried or is it part of the process of his body catching up past his chickenpox?