Heatwaves can lead to which of the following health risks?

a) Dehydration and heatstroke
b) Hypothermia
c) Frostbite
d) Allergic reactions

Rapid rises in heat gain due to exposure to hotter than average conditions compromises the body's ability to regulate temperature and can result in a cascade of illnesses, including dehydration, heat cramps, heat exhaustion, heatstroke, and hyperthermia.