Sulfamethoxazole and thighs

I hope someone can help me. I developed a couple of boils in my inner thigh area and my doc did not want to drain them until he tried one last remedy, Sulfamethoxazole. I began taking 2 giant pills a day exactly 12 days ago. The medicine helped the with the boils a lot. They seem to be down to pea size. I suffer from Generalized anxiety disorder and Panic Disorder and I can honestly say that this medication induces anxiety in people. I woke up in the middle of the night about 2 days ago shivering uncontrollably and could not move from the spot I was shivering in. I think I broke a tooth from the chattering of them. I did not think anything of it because I figured it was a nightmare. This morning when I woke up, my body was really sore. My back was killing me and I had a rash on the back of both hands and around/on my feet. I could not get a hold of my dermatologist so I called a couple pharmacies and they told me to stop taking the medicine and take a benadryl. I took the advice and am now wondering if I am allergic to sulfa or maybe this is all a side effect from the pills. I am now terrified about all this because I just read about a disease called Stevens-Johnson syndrome. If anyone has input, please post. Thanks

-John

P.S. I currently take Klonopin and Paxil CR incase needed to know.

On day 12 of a 14 day treatment of Septra DS the backs of my thighs began to itch. I thought I might have gotten a heat rash from the vinyl padded chairs at my work. Just to be safe I stopped the meds because I have a history of antibiotic allergies. That was on a Friday. By Monday afternoon I had to leave work early to rush to my doc who said I probably had a rash from the bronchitis I was treated for (something called viral exanthem). I didn't buy it but trusted the doc. Two days later I was in agony. I itched EVERYWHERE! Relentless horrible itching. I took 2 full strength benadryls every 3 hours to no avail. Tried calamine lotion,etc. Nothing worked. The doc finally gave me 40 mg of prednisone for 5 days. But it's day 3 of the steroid and I started itching horribly again last night.
I know it's the sulfa because I now remember some slight itching the last time I took it. So beware... itching on sulfa is a red flag... your skin is telling you something!

I am taking it for a UTI and I have broke out in a horrible rash from this or the Phenozpyridine that goes with it that turns your urine bright yellow. The rash is worst on my thighs and gets worse with heat. It is also a VERY painful rash that is spreading all the way from my face to the bottoms of my feet. At this point I can hardly walk between the thigh rash and feet rash.

I was prescribed this medication for 7 days, one tablet twice a day. After just taking two of these tablets (one @ 0830 and one @ 2030) I broke out with hives/rash, burning (like fire) itch, around my pelvic area and thighs, dry mouth, unable to sleep, and a constant urge to urinate. I have not been in the sun, and have drank plenty of water with this medication as advised. These symptoms have only appeared since taking this medication, therefore I have stopped taking this awful drug. Dr's. office is closed today, but will be in to see her tomorrow. I will never take this drug again, it is truly horrible.

After taking sulfmeth-trimeth to cure my UTI, on the 8th day. I woke up with a small patch of red bumps on my inner thigh that looked like mosquito bites!! I did not think much of it..But then later on that day when I went to the bath room. I realized it spread all over my thighs and part of my stomach and legs. Then thats when I really freaked out. I am usually not allergic to any medications. I discontinued the medication. And now till this day am taking Benadyrl.