<s>[INST] I am an african american woman age 35 and. I am unable to go out in the sun for long periods of time due the fac that when I do get hive like rashes on any exposed area from the sun. They itch like cazy.. sometimes i will have blisters that will appear.. Is it a heat rash or sun poison? [/INST] Hi, It seems to be solar urticaria. It is an allergic reaction to sun rays. I would recommend you to apply sunscreen lotion on affected areas during the day time and apply topical steroid like cortisone cream on the affected areas. Hope I have answered your query. Let me know if I can assist you further. </s>