My sypathy to your son and you.
I was a chronic sunbather ( golden brown from june to sept) until my mid 20's when i overdosed on sunshine and baby oil. That first night i had no pain or burn or fever, only a freezing chill i could not clear ( in mid july). A couple days later while sweating at work my body began to itch an itch that you cannot scratch. i ran to a shower but as the water would sooth, the drying would only increase the "itch". 2 benadrils to knock me out for 6 hrs.
The condition repeated for a couple days but, eventually eased.
10 years later i still have the condition reaccour when i make the mistake of not wearing sun block.
My recomendation. I am still able to spend the day on the boat with no shirt but sunscreen is a must. much like im sure your son will, i still choose to attempt a no shirt no screen day once in a while and i always pay the price. if you do get too much unprotected sun try and stay dry and sweat free. i have tried all sotrs of lotions and creams and nothing helps when you get that far.
looks like its been a while since this happened but if you have found any medical advise i would loove to hear it
Pat Maher
pat.maher@azek.com