Rash related to sun exposure

Dear Doc,

i'm suffering from a skin rash that started almost 3 years ago on my arms - I use to get exposed to the sun alot and i live in Dubai which is a very hot country! i went to a couple of dermatologists and they prescribed ointments that i was told to apply on the rashed area, but that didn't work well for me.

Recently i started being more carefull while being exposed to the sun, instead of using a protection free tanning oil i started applying sunblock SPF 100 to protect my rashed area while tanning. However, today im suffering from a rash that is spread all over my body: arms (major spread), legs, chest, back and neck (all minor) a couple of little spots here and there.

The rash looks like white spots that are very tiny and sometimes not even visible untill it sees the sun! the spots get slightly bigger and they start turning red and become very itchy as soon as im exposed to the sun! even when i have a 100spf sun block i do feel the itch!

after my sun exposure id done and i shower i feel the itch for a couple of hours later, but by the time i go to bed it is all gone!

please advice what could i do? i love the beach specially in the summer when its atleast 47 degrees Celcius..

Best Regards,
NG

[Debra1959]

I have this exact same problem!  Mine started when I was about 30 and over the years it has become worse.  My rash is in the same spots every time and only happens when I am exposed to the sun in Hawaii or Florida even with sunblock.  (I am exposed to the sun all day, all summer here in Nebraska, but fortunately no rash.)  I hope the dr. answers your question because I need to know what to do too.