skin or soft tissue infection
"Prescribed this medicine for a skin infection.  Side effects that I experienced were: confusion, sensitivity to sun, could feel some old muscle/tendon injuries stiffening, depression and even had some thoughts of suicide.  These side effects were very real and tied directly to taking the medicine.  I could feel the confusion and depression lift, literally within 2 minutes, when the side effect wore off.  The depression would dissipate about 8 hours after taking the 500mg pill. "