This is to warn anyone prescribed doxycycline in the summer to stay out of the sun. IT is highly photosensitive. I just returned from the ER (4 hours there) to get treated for that same thing.
Two days after starting it, my hands became tingly, then my feet, then they started to feel hot, then burning, like they were in flames. Today on our boat, the sun felt like it was 100 degrees on my skin, I moved to the shade & it didn't get any better other than the sun wasn't feeling like it was burning my skin off.
My face was flushed, not sunburnt but flushed red, my forehead & my toes had dark red swelling on the tops of them. My skin on my toes & hands burnt like an open wound if I itched them & if they brushed up against anything.
The ER doc said usually doctors do NOT prescribe doxycycline in the summer for that reason, he even said you can get the reaction even from sun coming thru a window in your house.
Hope this helps someone else & prevents them a trip to the ER this summer.