U.S. doctors online nowAsk doctors free
A 44-year-old member asked:

What are the causes of dizziness fainting and tunnel vision?

1 doctor answer1 doctor weighed in
Dr. Richard Bensinger
Ophthalmology 53 years experience
BP problem: Usually this is a postural hypotensive issue that can occur if you are anemic or have a weakly responsive vascular system to such activities as standing up after crouching or sitting for a long time. If this is consistent, and the vision recovers fully in between, then your family doctor should be contacted for an analysis of your cardiovascular system.
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Oct 9, 2018

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.