Almost Passing Out
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Reviewed By:

Maxwell J. Nanes, DO

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, MD

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.

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Content updated on Feb 26, 2024

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  • Running or jogging makes my head spin and feel like passing out

  • Could not tolerate the sauna / hot spring and nearly fainted

  • Feels like I am passing out

  • Feeling like about to black out / pass out from standing too long

  • Feeling like about to black out / pass out after running

  • Almost fainted from injections or blood drawing

  • Almost fainted after sitting in the same position for too long

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About the Symptom

It's the sensation of feeling faint without actually losing consciousness.

When to see a doctor

Seek professional care if you experience any of the following symptoms

  • Feeling faint

Possible causes

Generally, Almost passing out can be related to:

  • Multiple myeloma (MM)

    This is a cancer of a type of white blood cell in the blood, called a plasma cell. Cancerous cells multiply and "crowd out" other healthy, normal cells. Risk factors include positive family history, older age, and male sex. Symptoms include fatigue, bone pain, weight loss, and inability to fight infections.

  • Hypertrophic cardiomyopathy

    Hypertrophic cardiomyopathy is a condition where the heart muscle becomes thick. It is often caused by gene mutations in the heart muscle. The thickened heart muscle can become stiff, reducing the heart's ability to pump blood adequately.

  • Depression

    Depression is a mental illness that leads to low mood, reduced energy levels, and changes in sleep. This affects everyday activities like attending school and work. As the condition worsens, patients might have suicidal thoughts. Although stress and past trauma can cause depression, it can take time to identify and address causes, and genetic factors may also be at play.

  • Adjustment disorder
  • Benign arrhythmias such as extrasystoles
  • Migraine
  • Common cold (upper respiratory tract infection)

Related serious diseases

Sometimes, Almost passing out may be related to these serious diseases:

  • Epilepsy

    Epilepsy is a neurological disorder where brain activity becomes abnormal, causing seizures of varying durations and severities. It can affect people of any age and may be caused by genetic disorders or brain injuries, such as stroke.

  • Heatstroke
  • Cerebral infarction

Doctor's Diagnostic Questions

Your doctor may ask these questions to check for this symptom:

  • Have you felt like fainting without actually losing consciousness?

  • Do you have a fever?

  • Do you have headaches or a heavy feeling in your head?

  • Are you feeling nauseous or have you been vomiting?

  • Have you ever experienced dizziness with ringing in the ears or deafness?

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Find Similar Symptoms

Similar symptoms or complaints

  • Faint

Reviewed By:

Maxwell J. Nanes, DO

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, MD

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.

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