urinary tract infection
"I took amox/clav for three days, then spent the next ten days with a rash over every single inch of my body that itched 24 hours a day.  Got rid of the UTI, but I couldn't leave the house for over a week - couldn't stand clothes on my skin.  The only thing that helped was scalding water, so I showered several times a day when the Benadryl would wear off.  NEVER AGAIN!!!!!"