A few years back I had an MD - since retired - that first put me on lowest dosage of Ativan - developed rash when went out into sun. Then put me on lowest dosage of Xanax - same deal only worse - arms swelled up like goodyear blimp just from walking around outside in sun. Acute photosensitivity it's called. Will only take Valium - works great - although I hear Klonopin seems to be the benzo of choice today. I think lowest dose Klonopin probably equals 5mg of Valium - or even 10 - took one one time and almost fell asleep - not for me.........