For the past few months I've been feeling very unwell when in a warm environment
I'm not talking about heatwave conditions or anything extreme, more like if standing in a queue to pay in a warm shop or if sitting watching my child's swimming lesson at an indoor pool. In these examples the environment is quite warm but it doesn't seem to bother anyone around me. Very soon after entering warm places I break I to a sweat and become light headed, brain foggy, fast heart rate and a bit nauseous, these symptoms then remain even after I've cooled down. I'm mid 30s, female. Ive been to gp twice who ordered full bloods which came back normal and haven't given any further help. Any advice? Thanks