I been suffering with these same red welts. They gave me claritin, rididine, motrin for pain, steroid cream, Nothing works, It's scaring up my arms. Dr's don't seem to know anything. They said bed bugs, had an exterminator here twice, they found nothing. I get nausea, and feel tired, along with the burning and itching. I am so sick of it. Nobody knows what's wrong with me. This picture posted is the closest to seeing what it is. I'm honestly scared.