U.S. doctors online nowAsk doctors free
A 21-year-old member asked:

I feel extreamly dizzy when i get up to fast why is this hapening? i fear it maybe a concusion how long will it stay like this if it is?

2 doctor answers4 doctors weighed in
Dr. Irv Loh
Dr. Irv Lohanswered
Cardiology 49 years experience
May not be serious: You are describing postural or orthostatic hypotension, or symptoms induced by relatively low blood pressure when going from lying or sitting to standing, and also noted when bending over or squatting, and then standing. Sluggish reflexes as one "matures", neurologic conditions, or commonly, adverse effects of medications or dehydration may be the root cause. If persists, consult your doctor!
Dr. Osman Farooq
Pediatric Neurology 20 years experience
Pre-syncope: Dizziness upon standing is a common symptom. It is called pre-syncope. It occurs because your blood has to suddenly re-distribute itself when you stand up. So there will be a sudden decrease in blood flow to your brain, and this causes you to feel dizzy or light headed. The best thing is to get up slowly. If it continues, you may want to get checked by your doctor.
Dr. Adam Lewis
Dr. Adam Lewis commented
Neurosurgery 35 years experience
Another medical term for this condition is orthostatic hypotension.
Sep 14, 2013

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership
Last updated May 23, 2015

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.