Yesterday I took Gunther to the vet because of bumps. A few had started around his neck about three weeks ago, right after his first day at doggy day care. We thought is was his collar because the dogs play in the kiddie pools and the collar stays wet all day. I changed the collar to a "breathable" one but the bumps started spreading and looking like hives. He also just recently started to sneeze (an inverted sneeze is what the vet called it. sounds like a pig snort). The Vet did a skin scrape and said the hives are an allergic reaction, probably due to something he ate, or a bug bite, or bee sting. She gave me an antibiotic because she detected some infection and a generic form of benadryl. From this thread I'm thinking it could be the seasonal change, as I can't think of what has changed in the last three weeks except two things: doggy daycare (which is only one day a week) and Gunther sleeps in our bed more. I also wondered than if it could be the bleach I wash our sheets in or the fabric of the blankets. Any ideas about that?