Causes of dizziness are one of the most common symptoms reported to doctors, but it is used in several different senses. For example, one person using the word “dizzy” might mean they feel off-balance, another might be talking about feeling faint, and a third might mean experiencing vertigo (i.e., feeling like their surroundings are spinning around them).
Thankfully, most cases of dizziness are not associated with sinister underlying conditions. However, it’s smart to be aware of the ten most common reasons for dizziness so that you know what to highlight to your doctor and can tell when you should be concerned about a more serious cause.
Best 10 way Common Causes of Dizziness
#1. Vestibular neuritis
Vestibular neuritis is a viral inner ear infection that causes dizziness. It is typically accompanied by balance problems and sometimes by nausea or vomiting. This type of dizziness has a sudden onset (often after a cold or flu) and is usually self-limiting, though you might need anti-vertigo drugs to cope with the spinning sensation.
Dizziness is especially common in anxiety sufferers who experience panic attacks or hyperventilating when stressed. This results from the fact that abnormally fast breathing can increase blood pH associated with lowered concentrations of carbon dioxide in the body. If you have agoraphobia (i.e., fear of large, open spaces), dizziness may also develop if you go outside or enter an unfamiliar environment.
Hypoglycemia—Low blood sugar—can make you feel faint or off balance. While this cause of dizziness is primarily seen in diabetics, it can in rarer cases be caused by a large carbohydrate-based meal, pancreatic tumors, binge drinking or adrenal gland problems.
Suppose you haven’t been drinking enough water (especially during intense exercise), or you’ve had a bad gastric illness that has led to diarrhea, vomiting and high fevers. In that case, you may feel dizzy and faint because of dehydration. This type of dizziness is usually seen in conjunction with tiredness, intense thirst, a dry mouth, and a headache.
While the classic migraine involves visual disturbances that precede an intense headache, some people experience dizziness before or after their migraine attack. In addition, there is a particular type of migraine—vestibular migraine—that may only involve dizziness and light sensitivity (without any accompanying headache).
Any cause of low blood pressure can lead to a spinning sensation, balance difficulties or feeling faint. If your dizziness strikes when you suddenly get up out of bed or sit down on a chair, you may have a condition called postural hypotension.
This is more common in older age and occurs when there is a temporary reduction in blood flow—and therefore oxygen—to the brain, causing a sharp drop in systolic blood pressure (the top number of your blood pressure reading). Treatment is seldom necessary, but someone with this condition should, of course, be careful when changing position.
#7. Vertebrobasilar insufficiency
When you have inadequate blood flow at the back of your brain, this is called vertebrobasilar insufficiency. It is often caused by blockages in the blood vessels between the heart and brain, which are more likely to develop if you have high cholesterol, smoke, or have a family history of vascular issues like high blood pressure and heart attacks. If this is the reason for your dizziness, you may also experience double vision, tingling in the hands or feet, slurred speech, and confusion.
#8. Heart rhythm disorders
When your heart beats in an abnormal rhythm, you may feel faint or lightheaded. If you notice that your heartbeat is fast and irregular, you may have a relatively common heart rhythm disorder called atrial fibrillation. Further symptoms include chest pain or discomfort, tiredness, and shortness of breath.
#9. Benign paroxysmal positional vertigo (BPPV)
BPPV causes dizziness, an intense but brief sensation of spinning after you move your head (for example, when you bend down to pick something up or you turn over in bed). This dizziness usually doesn’t last longer than a minute and is caused by a build-up of crystals in the ear’s balance system tubes.
There are non-invasive treatments for BPPV—most people benefit from repositioning procedures that involve moving the head to shift the crystals to places where they will no longer cause symptoms.
#10. Certain drugs
It’s always worth taking a look at the side effects of your current medications if you start to experience any dizziness, especially if you’ve recently started taking new drugs. A huge range of medications causes dizziness, balance problems or lightheadedness as a side effect, most notably those that treat high blood pressure, depression, epilepsy, and anxiety.
A final cautionary note
Regardless of whether you think you’ve identified the cause of your dizziness by considering this list, you should always be examined by a doctor if your dizziness is severe or persists for more than a day or so. While most cases are not serious, some are related to underlying neurological or cardiovascular issues. It is always better to be safe than sorry for your health.