Dehydration in children usually is caused by vomiting, diarrhea, or both. It also can happen when children don't want to drink because they have mouth sores or a sore throat.

Causes

Dehydration in children usually is caused by vomiting, diarrhea, or both. It also can happen when children don't want to drink because they have mouth sores or a sore throat. Kids also can get dehydrated in hot weather or when they are very active.

Signs & Symptoms

• A dry or sticky mouth.
• Few or no tears when crying.
• Eyes that look sunken.
• In babies, the soft spot (fontanelle) on top of the head looks sunken.
• Peeing less or fewer wet diapers than usual.
• Crankiness.
• Drowsiness or dizziness.

Treatment

• Give your child small sips of oral rehydration solution as often as possible, about 1 or 2 teaspoons (5 or 10 milliliters) every few minutes.
• Babies can continue to breastfeed or take formula, as long as they are not vomiting repeatedly.
• Older children also can have electrolyte ice pops.
• Kids can keep eating their regular diet unless the doctor recommends a change. They may not want to eat at first but as long as they are drinking, it’s OK if they aren’t eating any solid foods.
• Don't give babies plain water instead of an oral rehydration solution. It doesn't have the right nutrients for babies with dehydration.
• Don't give sports drinks, soda, or full-strength (undiluted) juice. They have too much sugar which can make some symptoms worse.
• As your child starts to feel better and has a better appetite, you can give less oral rehydration solution and more of their usual food and drink.
• Don’t give medicines for diarrhoea or vomiting unless the doctor recommends it.