Fainting (or "passing out") is a temporary loss of consciousness that usually happens because not enough blood is going to the brain due to a drop in blood pressure. Blood pressure can drop from dehydration, standing up too quickly, standing or sitting still for a long period, or a sudden fear of something (such as the sight of blood). Fainting also can happen from low blood sugar, especially in people with diabetes or if someone hasn't eaten in a while.

It's important to get medical care to figure out what brought on the fainting episode and help prevent it from happening again.

What Are the Signs & Symptoms of Fainting?

Someone who is about to faint might have:

• dizziness
• lightheadedness
• paleness
• unsteady balance
• vision changes
• fast or irregular heartbeat
• sweating
• nausea or vomiting

What Should I Do if My Child Faints?

Whether your child is about to faint or has fainted:

• Loosen tight clothing.
• Make sure the area is well-ventilated.
• Check that your child is OK, and don't let them stand or walk until they feel much better.

If your child seems about to faint:

• Have them lie down or sit down with their head between their knees.

If your child has fainted:

• Have them lie flat with their feet slightly raised. Don't move your child if you think the fall might have caused an injury.

When Should I Call the Doctor About Fainting?

Call the doctor if your child has any fainting episode.

Get Emergency Medical Care if Your Child:

• fell and may be hurt
• is having trouble breathing
• is having trouble speaking, seeing, or moving
• has chest pain, or a fast or irregular heartbeat
• is having a seizure
• was physically active when it happened

What Can Help Prevent Fainting?

Make sure kids:

• Drink plenty of liquids, especially in hot weather or during physical activity.
• Eat regular meals and snacks to avoid low blood sugar.
• Take breaks often and move around as much as possible when sitting or standing for long periods of time.
• Slowly breathe into a paper bag when they are anxious and breathing too fast.
• Avoid overheated, cramped, or stuffy environments.