<s>[INST] My son has a rash that comes and goes randomly. It appears randomly all over his body to include his face. Its red, with no real raised bumbs, but his face and lips do swell or get a puffly look when the rash flares. He is real tired, has no appetite , but has no fever. Am lost. One doctor told us it was a virus and gave us meds, but he still has it and it seems worse. We are waiting for a lymes test to come back to rule this out [/INST] Hi, Welcome to HCM.It appears that your son is suffering from the problem of Urticaria. This is a common problem in children because of mutiple reasons. You can meet a dermatologist for best guidance and in between can give him oral antihistamine such as Desloratadine daily according to proper dose. </s>