Understanding Orthostatic intolerance: Causes, Symptoms, and Management

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Orthostatic intolerance

by Alike Medical Team ∙ Updated on June 13, 2023

General

Orthostatic intolerance is a condition in which a person has difficulty maintaining blood pressure and blood flow to the brain when standing upright. It can cause a range of symptoms, including dizziness, fainting, and fatigue.

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Signs & symptoms

Symptoms: Dizziness or lightheadedness when standing up Fainting or near-fainting when standing up Fatigue or weakness, especially after standing for prolonged periods Nausea or vomiting Headache Palpitations or racing heart rate Blurred vision or visual disturbances Cognitive difficulties, including brain fog and difficulty concentrating Shortness of breath

Diagnosis

A medical professional can diagnose orthostatic intolerance by conducting a series of tests, including a tilt table test, which involves being strapped to a table that is tilted at different angles while your heart rate and blood pressure are monitored. Other tests may include a blood test to rule out other conditions, such as anemia or hypoglycemia, and a physical exam.

Treatment

Treatment for orthostatic intolerance typically involves lifestyle changes, such as increasing fluid and salt intake, wearing compression stockings, and avoiding triggers that may worsen symptoms, such as hot environments or prolonged standing. Medications may also be prescribed, such as fludrocortisone, midodrine, or beta-blockers. In severe cases, intravenous fluids or medications may be needed.

Note

☝ We provide information on prescription and over-the-counter medicines, diagnosis, procedures and lab tests. This material is provided for educational purposes only and is not medical advice, diagnosis or treatment.

National Institutes of Health ∙ World Health Organization ∙ MedlinePluse ∙ Centers for Disease Control and Prevention

☝ All information has been reviewed by certified physicians from Alike

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