I was taking sulfamethoxazole for 9 days and woke up on the lasttay with whatr looked like the measels all over my entire body, it is now two days later and I am still covered in hives and really itchy. I, too had a fever of 100.7 at the highest. It's terrible because I work with the public, and everyone I come across looks at me as though I have the plague. Well, I guess there have been more severe allergicreactions. I should count my blessings. It's also nice to know I'm not the only one. You never know when a health professional; is gonna slip up and misdiagnose you.