What should you know about heat stroke and shivering?

Shivering is involuntary muscle activity that can appear when the body is trying to regulate temperature. It may follow rapid cooling, dehydration, exertion, or a fever, and it can occur as heat illness worsens. The pattern matters: confusion, fainting, unusual behaviour, seizure, or inability to drink suggests dangerous brain or body dysfunction. Heat exhaustion can precede heat stroke, but symptoms overlap. Do not use shivering alone to decide that the person is safe or that the problem is an infection.

Move the person away from heat, remove unnecessary layers, and cool the skin with wet cloths, cool water, and moving air. Keep observing responsiveness and breathing. Do not wrap the person in blankets simply because they are shivering, and do not use alcohol rubs or force drinks. If they are alert and swallowing normally, small sips may be reasonable while arranging medical advice, but suspected heat stroke needs emergency care rather than home treatment.

Call emergency services for confusion, collapse, seizure, severe drowsiness, breathing problems, persistent vomiting, or suspected heat stroke, whether or not shivering is present. Arrange prompt assessment when symptoms follow substantial heat exposure and do not settle after cooling. Mention any fever, medicines, infection symptoms, or cold-water exposure because these details help distinguish possible causes.

Ask how to distinguish overheating from Fever, whether your medicines affect temperature control, which cooling methods are suitable, and when you can safely return to work or exercise. Ask what to do if shivering returns in a warm environment or after treatment.