A scraped knee, a blood draw, or even a spooky Halloween display can leave some children feeling dizzy or sick to their stomach. For parents, watching a child turn pale or pass out can be frightening.
Understanding why this happens and having a plan can help your family feel more prepared.
Why Does This Happen?
The sight of blood can trigger a reflex that suddenly lowers blood pressure and sometimes slows the heart rate. Less blood reaches the brain for a brief time, which causes fainting. The medical term for this is vasovagal syncope.
Pain, fear, and needles can trigger the same response. It happens automatically, so children cannot simply decide to feel better. This type of fainting is usually harmless, but a fall with fainting can cause injuries.
What Are the Warning Signs?
Before fainting, your child may:
Feel dizzy, warm, or queasy
Look pale or become sweaty
Notice blurry vision or dark spots
Say, “I feel funny”
Teach your child to tell an adult when they feel faint and to sit or lie down instead of standing or trying to walk.
How Should You Respond?
If there are no injuries, help your child lie flat and raise their legs. Have them rest for about 10 minutes or until they feel better. Getting up too quickly can cause the symptoms to return.
If your child passes out completely, check their breathing and stay with them. Do not offer food or drinks until they are fully awake. Once recovered, help them sit up slowly and offer sips of water.
Call 911 if your child is not waking promptly, has trouble breathing, or is seriously injured.
Preventing Another Episode
Encourage regular meals and plenty of water. Before shots or blood tests, tell the care team if your child has felt faint before. After vaccines, children should remain seated or lying down for 15 minutes, especially if they have a history of feeling faint.
Plan ways to make trips to the doctor easier. Your child might look away from needles, listen to music, or hold a favorite stuffed animal. If fear makes these visits difficult, ask about support from a child life specialist or mental health professional.
For younger children, explain that blood is good. It carries oxygen and nutrients around the body. A small scrape may look scary, but holding pressure stops the bleeding, and a grown-up can help clean the skin and cover the wound.
For older kids and teens, avoid teasing them for feeling faint at the site of blood. Don't pressure them to watch scary movies, and remember, Halloween can be fun without the gore!
When to Call Your Child’s Doctor
Contact your child’s doctor after a first fainting episode, even if recovery is quick. Repeated episodes also need evaluation. Seek emergency care if fainting happens during exercise or while lying down. Chest pain, a racing heartbeat, or a family history of sudden, unexplained death should also be reported to your child's doctor.
With reassurance and a clear plan, children can learn to recognize warning signs of fainting, and you can respond quickly and safely.
Dr. Mike Patrick is an Assistant Professor of Pediatrics at the Ohio State University College of Medicine and Medical Director of Interactive Media for Nationwide Children's Hospital. Since 2006, he has hosted the award-winning PediaCast, a pediatric podcast for parents. Dr. Mike also produces a national podcast for healthcare providers—PediaCast CME, which explores general pediatric and faculty development topics and offers free AMA PRA Category 1 Credit™ to listeners.
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