prostatitis
"Treated for prostatitis, I was prescribed a 56 capsule, 28 day course.  They quickly dealt with the main symptom, very painful urination.  Having not noted the warning about exposure to sunlight, I went out in the sun and suffered, firstly, severe itching of the scalp; followed by reddening of the scalp and nose.  I stayed out of the sun for the next 27 days."