I was prescribed Bactrim DS for mild acne. I was told to take it ...

I was prescribed Bactrim DS for mild acne. I was told to take it once daily for two weeks and then twice daily thereafter if I didn't have an adverse reaction, as my dermatologist indicated that it sometimes takes a long time for side effects to become evident using this medication. I am still in the one pill a day phase of my treatment and I am going to stop taking this medicine. When I first started taking it, my lymph nodes in my neck became swollen, yet I did not have a cold or anything else that could immediately explain this symptom. My right lymph node in particular became very, very swollen and tender and was rock-hard to the touch. You could literally see it bulging out of my neck. It hurt to move my neck the wrong way and I could hardly turn my head because of all the pressure and soreness of my lymph node. I stopped taking it for a few days and the size of the lymph node decreased, but it remained very full feeling and firm / rock-hard to the touch. In addition, I have experienced persistent headaches and joint pain during the time I have taken this medicine. (I'm 21 years old, so joint pain is a symptom almost definitely linked to the Bactrim.) I took ONE PILL last night, foolishly thinking it would be okay, and not long after I showered and got in bed, I began to feel a prickly sensation primarily from my groin up. It was a prickling, itchy sensation on my face, scalp, neck, arms, back, and even in my groin area. It was absolutely maddening and I couldn't get to sleep. At the suggestion of my fiance, I tried a second shower and that temporarily soothed it very slightly. It is the day after that and I haven't taken it again, but I am still prickly / tingly / itchy all over and I believe I am beginning to develop a rash. I have also had a headache since last night, which began about 40 minutes after taking the pill. My lymph nodes are also inflamed yet again, so I have isolated the problem to be a result of the Bactrim. I will not continue to use this medication and I intend to contact my physician to request another course of prescription therapy. Keep in mind that everyone's reaction to any medication is unique and some of the stories people have written on this site are extreme and unusual cases. Don't rush yourself to the emergency room just because you're taking Bactrim and you read about someone else's serious side effects -- all medicines affect people differently and you might experience minor side effects, if any at all. Call your doctor with any questions and get a second opinion if needed.