Faint
Free Symptom Checker
with Physician-supervised AI

Reviewed By:

Maxwell J. Nanes

Maxwell J. Nanes, DO (Emergency department)

Dr Nanes received a doctorate from the Chicago College of Osteopathic Medicine and went on to complete a residency in emergency medicine at the Medical College of Wisconsin. There he trained at Froedtert Hospital and Children's Hospital of Wisconsin in the practice of adult and pediatric emergency medicine. He was a chief resident and received numerous awards for teaching excellence during his time there. | | After residency he took a job at a community hospital where he and his colleagues worked through the toughest days of the COVID-19 pandemic. |

Yoshinori Abe

Yoshinori Abe, MD (Internal medicine)

Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.

From our team of 50+ doctors

Please choose the symptom you are most concerned about.

It will help us optimise further questions for you.

By starting the symptom checker, you agree to the Privacy Policy and Terms of Use

Find another symptom

How Ubie can help you

With an easy 3-min questionnaire, Ubie's AI-powered system will generate a free report on possible causes.

  • Over 1,000 medical centers, trained by over 50 doctors, and still improving.

  • Questions are customized to your situation and symptoms

Your symptoms

Input your symptoms

Our AI

Our AI checks your symptoms

Your report

You get your personalized report

Personalized Report

✔︎  When to see a doctor

✔︎  What causes your symptoms

✔︎  Treatment information etc.

People with these symptoms also use Ubie's symptom checker to find possible causes

  • Temporary loss of consciousness

  • Felt "floaty" and almost in a trance after recovering from fainting / seizure

  • Passed out / blacked out after sitting in the same position for a long time

  • Can't see half of my usual visual field after I woke up from my seizure

  • Checking my blind spot when driving nearly made me faint or black out

  • Before the seizure happened there were sounds or whispers in my head

  • Fell unconscious but those around me said I was staring at something

Just 3 minutes.
Developed by doctors.

Learn More

Content updated on Jan 4, 2023

About the symptom

A temporary loss of consciousness is known as fainting, sometimes known as passing out or syncope. An abrupt decrease in blood supply to the brain causes it to happen. A typical incident lasts a few seconds to minutes. The majority of fainting spells are harmless.

When to see a doctor

Seek professional care if you experience any of the following symptoms

  • Losing consciousness

Possible causes

  • Anemia

    Anemia is a disorder where the body's tissues don't receive enough oxygen due to a lack of healthy red blood cells. There are several types of anemia with various causes, the most common being iron-deficiency anemia, which results from insufficient iron. Iron is needed to produce hemoglobin, a substance in red blood cells that helps carry oxygen.

  • Dissociative disorder

    Dissociative disorder is a mental disorder that involves experiencing a disconnection and lack of continuity between thoughts, memories, surroundings, actions, and identity. People with dissociative disorder escape reality in ways that are involuntary and unhealthy, causing problems with functioning in everyday life.

  • Neurally mediated syncope

    Neurally mediated syncope, also known as vasovagal syncope, is a sudden drop in heart rate and blood pressure that results in fainting. Common triggers include strain, stress, long periods of standing, exposure to heat, or the sight of blood or something unpleasant.

  • Migraine
  • Atrial fibrillation (AF)

Related serious diseases

Questions your doctor may ask about this symptom

Your doctor may ask these questions to check for this symptom

  • Have you currently regained consciousness after temporarily losing consciousness?

  • Have you lost consciousness due to being overwhelmed emotionally?

  • Did you feel lightheaded before losing consciousness?

  • Did you have any chest pain before losing consciousness?

  • Did you have palpitations before you lost consciousness?

Other Related Symptoms

Similar symptoms or complaints

Reviewed By:

Maxwell J. Nanes

Maxwell J. Nanes, DO (Emergency department)

Dr Nanes received a doctorate from the Chicago College of Osteopathic Medicine and went on to complete a residency in emergency medicine at the Medical College of Wisconsin. There he trained at Froedtert Hospital and Children's Hospital of Wisconsin in the practice of adult and pediatric emergency medicine. He was a chief resident and received numerous awards for teaching excellence during his time there. | | After residency he took a job at a community hospital where he and his colleagues worked through the toughest days of the COVID-19 pandemic. |

Yoshinori Abe

Yoshinori Abe, MD (Internal medicine)

Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.

From our team of 50+ doctors

User testimonials

Just 3 minutes.
Developed by doctors.

Ubie is supervised by 50+ medical experts worldwide

Shohei Harase

Shohei Harase, MD

Neurology

Kameda Medical Center, Japan

Yu Shirai

Yu Shirai, MD

Psychiatry

Yotsuya Yui Clinic, Japan

Yoshinori Abe

Yoshinori Abe, MD

Internal medicine

Co-founder of Ubie, Inc.

Rohini R

Rohini R, MD

Ear, nose, throat (ENT)

Bayshore Health Centre, India

Seiji Kanazawa

Seiji Kanazawa, MD, PHD

Obstetrics and gynecology (OBGYN)

National Center for Child Health and Development, Japan

View our medical experts