Cipero symptoms and conditions

I took Doxy last summer for cystic acne. It worked fine and I didn't have any problems, and my skin cleared up nicely. I had some left over (bad, bad, I know but it hasn't yet expired!) so I started taking it again about 4 days ago. I noticed, almost immediately, severe tingling and burning in my fingers and hands and up into my arms when I am out in the sun and for hours afterwards. Also water (like washing my hands) makes the tingly feeling much worse. Weird, right? My two index fingers are bright red and any touch burns.

It's weird because last summer when I was on it I was out in the sun all the time with no problems at all.