Call 911 if a seizure lasts longer than 5 minutes. Most seizures end on their own within one to three minutes, so a seizure that continues past the 5-minute mark is a medical emergency. But duration isn’t the only reason to call. Several other situations also warrant a 911 call regardless of how long the seizure lasts.
The 5-Minute Rule
Five minutes is the threshold recommended by the CDC, the Epilepsy Foundation, and major medical centers. A convulsive seizure that reaches this length enters dangerous territory because the brain is less likely to stop the electrical activity on its own. At this point, the condition can progress into what doctors call status epilepticus, a prolonged seizure state that risks brain damage, breathing failure, and other life-threatening complications.
If you’re with someone having a seizure, start timing it immediately. Use your phone, a watch, or count in your head. Seizures often feel much longer than they actually are, so having an actual time reference matters. If you’re approaching the 3- or 4-minute mark with no signs of slowing, go ahead and call 911. Paramedics carry medications that can stop a seizure, and getting them on the way early is better than waiting until you’ve hit exactly five minutes.
When to Call 911 Immediately, No Matter the Duration
Some situations call for emergency services even if the seizure is brief. The CDC lists these as reasons to call right away:
- It’s their first seizure. Anyone who has never had a seizure before needs emergency evaluation, even if the episode is short. A first seizure can signal an underlying condition that requires urgent diagnosis.
- They have another seizure soon after the first one without fully waking up or becoming alert between episodes. Back-to-back seizures without recovery in between are a form of status epilepticus and need immediate treatment.
- They have trouble breathing or waking up afterward. Some confusion after a seizure is normal, but if the person can’t be roused or is struggling to breathe, that’s an emergency.
- They’re injured during the seizure. Falls, head strikes, or cuts that happen during convulsions may need immediate medical attention.
- The seizure happens in water. Even if the person seems fine afterward, inhaling water during a seizure can cause lung or heart damage. Get them out of the water, check their breathing, begin CPR if needed, and call 911.
- They’re pregnant. Seizures during pregnancy pose serious risks to both the parent and baby.
- They have diabetes and lose consciousness. A seizure combined with diabetes could indicate dangerously low blood sugar or other complications that need rapid intervention.
What Happens If a Seizure Goes Too Long
A convulsive seizure lasting beyond 5 minutes is considered abnormally prolonged. By 30 minutes, the risk of lasting brain injury increases significantly. This is why the 5-minute call threshold exists: it gives paramedics time to arrive and administer seizure-stopping medication before the window closes.
For other seizure types, the timelines differ. Seizures involving altered awareness without full-body convulsions (where someone might stare blankly or make repetitive movements) are considered prolonged after about 10 minutes. Absence seizures, the brief “staring spells” more common in children, become concerning after 10 to 15 minutes. But for the type most people picture when they think of a seizure, the kind with muscle stiffening and rhythmic jerking, 5 minutes is the line.
What to Do While You Wait
Whether or not you’ve called 911, there are a few things that help. Ease the person to the ground if they’re not already there. Turn them gently onto their side so saliva or vomit can drain rather than block their airway. Move sharp objects or furniture out of the way. Place something soft under their head if possible.
Do not hold them down or try to restrain their movements. Do not put anything in their mouth. The old idea about swallowing the tongue is a myth, and placing objects between someone’s teeth can cause injury to both of you. Stay with them, keep timing the seizure, and speak calmly.
What Recovery Looks Like
After a seizure ends, most people enter a recovery phase where they feel groggy, confused, or exhausted. This is normal and typically lasts between 5 and 30 minutes, though it can stretch to several hours. During this time, the person may not remember what happened, may have trouble speaking clearly, or may feel anxious or emotional.
Stay with them until they’re fully aware of their surroundings. If someone doesn’t start to recover or remains unresponsive for more than 10 to 15 minutes after the convulsions stop, call 911. This can be a sign that seizure activity is still happening in the brain even though the visible shaking has stopped. Recovery symptoms that persist beyond 24 hours also warrant medical attention, though that’s typically a call to a doctor’s office rather than 911.
If They Have a Seizure Action Plan
People with diagnosed epilepsy often carry a seizure action plan, sometimes on a medical ID bracelet, in their wallet, or on their phone. This plan may include instructions for administering a prescribed rescue medication and specific guidance about when to call 911 versus when to let the seizure resolve. If you find one, follow it. Some people with epilepsy have seizures regularly that resolve on their own within a couple of minutes, and their plan will reflect that. But if there’s no plan available and you’re unsure, default to the 5-minute rule and the emergency criteria above.