Not Medical Advice: Symptoms of low blood pressure may include:
Blurry vision
Confusion
Dizziness
Fainting (syncope)
Lightheadedness
Nausea or vomiting
Sleepiness
Weakness
Blood pressure varies from one person to another. Normal blood pressure is usually between 90/60 mmHg and 120/80 mmHg.
Severe hypotension can be caused by sudden loss of blood (shock), severe infection, heart attack, or severe allergic reaction (anaphylaxis).
Orthostatic hypotension is caused by a sudden change in body position. This occurs most often when you shift from lying down to standing. This type of low blood pressure usually lasts only a few seconds or minutes. If this type of low blood pressure occurs after eating, it is called postprandial orthostatic hypotension. This type most often affects older adults, those with high blood pressure, and people with Parkinson disease.
Neurally mediated hypotension (NMH) most often affects young adults and children. It can occur when a person has been standing for a long time. Children usually outgrow this type of hypotension.
To learn more about low blood pressure, visit MedlinePlus.
Tip! See Low Blood Pressure Diagnosis & Treatment at WebMD.