Keratosis
"Have used this for one week but began to have serious side-effects including hives all over my back, severe diarrhea, terrible cold/flu, headache, joint soreness.  I do have an autoimmune disorder (endometriosis and Raynaund&#039;s) and the medication has warnings for people with autoimmune disorders so that may be why I am having such an adverse reaction.  Will see doctor tomorrow to learn if I should switch to Efudex maybe but will probably look into the genetic testing for DPD before I start that one."