Hi am from India and transferred to new Zealand some months ago. I used to sweat a lot in India but after coming here because of the cool whether i do not sweat. But when I go out in sun or workout in gym, or eat hot or chilli foods, or walk on steep slopes or take a hot bath these rashes appear on my body usually around my wrists firsts followed by whole arms, chest, legs, back some time buttocks too. These generally stay for minuet or too or until I cool down. The skin again comes to normal in minuets. Now my life is very much restricted because of this. I cannot play, go out in sun or do work which involves hard labour.