Sinusitis
"I was recently prescribed Bactrim DS for my chronic sinusitis  by my ENT. I informed her that I had been prescribed Bactrim in the past, although I did not inform her that it was lesser strength of the two  and after eight and a half days of taking two a day I finally had to stop due to the side effects that were occurring. I took the first dosage and felt fatigued and slightly itchy. I reminded myself tho that when I am overtired and restless that I tend to feel itchy so I took a shower and and slept for a while and I was fine. The following few days I had no problems besides light bloating and fatigue. I kept taking my medication as prescribed and after the fifth day I was having radiating pain around the left and right side of my sternum"