- Clammy skin, weak and rapid pulse, anxiety, nausea, thirst and faintness are signs of shock - organs aren't getting enough blood or oxygen.
- An allergic reaction may cause anaphylactic shock, a sudden drop in blood pressure and trouble breathing. Anaphylaxis can occur minutes after exposure and severe cases can lead to death within half an hour.
- Shivering, slurred speech and drowsiness are symptoms of hypothermia, aka cooling of the body. The condition is severe when shivering stops; unconsciousness and stoppage of breath may follow.
- Heatstroke is a life-threatening condition caused by exposure to high temperatures or humidity and poor circulation. Symptoms include flushed face, hot skin, rapid and full pulse, noisy breathing, headache and dizziness.
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