Heat exhaustion is marked by excessive dehydration and electrolyte depletion. Symptoms include abdominal pain, cramping, diarrhea, dehydration, and fever. Symptoms progress from vomiting to dehydration and ketoacidosis. Mucositis is treated with pain medications plus intravenous infusions to prevent dehydration and malnutrition. In severe cases with significant dehydration, intravenous rehydration may be necessary. Complications may include dehydration or seizures. They finally collapse due to fatigue and dehydration. Abnormal breathing is another sign of severe dehydration. Treatment initially begins by correcting dehydration and electrolyte problems. In those with severe dehydration, intravenous fluids may be required. If untreated, children can die from the resulting severe dehydration. Fever, lack of energy and dehydration may also occur. Many undergo rapid dehydration and sometimes oxidation. Conservative treatment involves insertion of a nasogastric tube, correction of dehydration and electrolyte abnormalities. Resulting dehydration and nutritional loss may need immediate treatment.