I cannot sweat, therefore, I'm very susceptible to heat-related illness. When I had my first heat stroke, the doctor said I'm more sensitive to heat now and need to be more mindful of my clothing choices, outside/indoor temperatures, monitor my body temperature, and always let any future doctor know about it because some medications can also cause a sensitivity/intolerance to heat.

This article from the '90s discusses the psychological and physiological effects of heat stroke.
This PDF discusses the thermal injuries of the nervous system after heat stroke.