Hello, My husband has been taking Sulfamethoxazole for about 8 days. He is 71 years old. He has, what looks like, flea bites all under his arms, arm pits and a couple on his arms. Maybe a total of 40 bytes . We don t think we have fleas in the house, but he does lots of yard work. I got to thinking that maybe it s a rash rather than bites. I went online to see if i could see a picture of what a rash from the medicine would look like. Can i get a picture somehow? thank you!