Dehydration Adults

Fluid and electrolyte depletion management

Step by Step

Mild dehydration causes thirst, dark yellow urine, headache, tiredness, and dizziness. Drinking fluids regularly usually helps, and oral rehydration solution can replace salts lost through vomiting or diarrhea. Rest in a cool place. Alcohol can worsen fluid loss. Seek urgent medical help for severe dehydration, which can cause dizziness on standing that does not go away, passing little or no urine, a rapid heartbeat, confusion, or being unable to keep fluids down. Call emergency services if someone is confused, very drowsy, or collapses. In older people, confusion may be the main sign. Illness, hot weather, exercise, and some medicines such as diuretics increase the risk.