Diarrhea and dehydration treatment

Loose stools carry away fluid and electrolytes. Risk increases with hot weather, fever, repeated stools, limited drinking or conditions that affect the kidneys. Thirst, a dry mouth, headache, dizziness, tiredness and dark urine can signal fluid shortage. Gastroenteritis is a common setting, but heat-related illness and urinary problems can also complicate the picture. Cloudy urine or constipation may provide useful context, but urine changes alone cannot identify the cause.

Sip an oral rehydration solution regularly, following the packet instructions. If you cannot obtain one immediately, take frequent small drinks of water and broth while arranging advice; very sugary drinks can aggravate diarrhea for some people. Continue breastfeeding if relevant and eat small, plain meals as tolerated. Rest in a cool place, avoid alcohol and keep track of urine, stool frequency and your ability to drink. Do not use anti-diarrhea medicines if you have blood in the stool or a high fever without first asking a clinician.

Get urgent medical help for confusion, fainting, severe weakness, very little urine, inability to drink, blood or black stool, severe abdominal pain or repeated watery stools with worsening symptoms. Children, older adults, pregnant people and those with kidney or heart disease can become unwell sooner and should seek advice early. Arrange assessment when diarrhea does not settle, returns repeatedly or follows recent antibiotics or travel.

Which rehydration product is suitable for me? How much should I drink while stools remain loose? Could my medicines or kidney health affect fluid replacement? What symptoms mean I should attend an emergency service?