Stomach cramps due to heat: what to know

Sweating removes water and salts from the body. During strenuous activity in hot or humid conditions, this loss can contribute to painful muscle tightening, including cramps in the abdominal wall. Heat cramps may occur with heavy sweating, thirst, fatigue, or muscle aches. Stomach pain can also come from a separate digestive illness, so heat exposure alone does not prove the cause. Nausea, headache, dizziness, unusual tiredness, or reduced urination may suggest dehydration or a more serious heat-related problem.

Stop exertion and move to a cool, shaded or air-conditioned place. Loosen extra clothing and cool the skin with a fan, cool wet cloths, or a lukewarm shower. Sip water gradually; an oral rehydration drink may help replace fluid and salts after heavy sweating. Rest the affected muscles and avoid returning to exercise until you feel fully recovered. Do not force fluids if you are vomiting, confused, or unable to swallow. Avoid alcohol while recovering, and plan breaks, shade and regular drinks before working in heat again.

Call emergency services for confusion, fainting, a seizure, severe difficulty breathing, collapse, or very hot skin with a change in alertness. Get urgent help if cramps are severe, do not settle after cooling and fluids, or occur with repeated vomiting, chest pain, severe headache, or inability to drink. Arrange medical advice when abdominal pain continues away from heat exposure, urine becomes very scarce, or symptoms keep returning despite sensible cooling and hydration.

Could heat or dehydration explain my cramps, or should another cause be checked? How much activity and heat exposure should I avoid while recovering? Would oral rehydration therapy be suitable for me?