Heat exhaustion vs stroke? Which has blotchy skin?

Temp of 104. Heatstroke is the 3rd stage of worsening heat-related conditions. As your body overheats, you first may develop heat cramps. If you don't cool down, you may progress to heat exhaustion, marked by heavy sweating, nausea, lightheadedness and feeling faint. Heatstroke occurs if body temperature continues to rise to 104. At this point, emergency treatment is needed. The skin is flushed red.