It could be something interacting with your meds and sun sensitivity? Plus, the sunscreen has to be applied every hour even though it says it's spf 50. The bites you are feeling are from the sunburn most likely. When I burn, and I will if I did that, I get the stingy feeling. It's like someone is sticking a needle in and out real quick. For me, it's the burn.

Do you have some aloa in the house? That should help cool it down. If not, Noxema, but you'll peel more so with that. If you have nothing, try Ibuprofin as it acts as an anti-inflamatory. Hope you feel better soon!

Signed,
Past sunburn queen