Dizziness: Why It Happens and What to Do About It

Common causes of dizziness

Dizziness is a symptom, not a disease, and it can come from many sources. Some causes are simple and harmless; others need medical attention.

Inner ear and balance problems

The inner ear controls your sense of balance, so problems there are a leading cause of vertigo. Benign paroxysmal positional vertigo (BPPV) causes brief spinning when you move your head. Vestibular neuritis, labyrinthitis, and Meniere's disease are other inner ear conditions that bring on dizziness, often with hearing changes or ear fullness.

Blood flow and blood pressure

When your brain briefly gets less blood, you feel lightheaded or faint. Common reasons include dehydration, standing up too fast (orthostatic hypotension), low blood sugar, anemia, and heart rhythm problems. Many medications, including blood pressure pills, sedatives, and some antidepressants, list dizziness as a side effect.

Neurological causes

Balance is partly a brain job, so when something goes wrong in the nervous system, dizziness often follows. Migraine frequently brings on vertigo, sometimes without much head pain. A concussion or other head injury often leaves people dizzy for days or weeks. Multiple sclerosis can affect the balance pathways, and nerve damage such as neuropathy or peripheral neuropathy in the feet makes it harder to sense the ground and stay steady.

Serious but less common causes

Sudden, severe dizziness can occasionally signal a stroke, a brain aneurysm, or a seizure disorder such as epilepsy. Infections that affect the brain, like encephalitis, can also cause it. These are uncommon, but they are the reason sudden dizziness with other warning signs should never be ignored.

When to seek emergency or urgent care

Most dizziness is not dangerous, but certain warning signs can mean a stroke, heart problem, or other emergency. Call 911 or go to the emergency room right away if your dizziness comes with any of these:

• Sudden, severe headache unlike any you have had before
• Slurred speech, drooping face, or weakness or numbness on one side of the body
• Trouble seeing, double vision, or sudden loss of vision
• Chest pain, shortness of breath, or a racing or irregular heartbeat
• Fainting or loss of consciousness
• Trouble walking, severe loss of balance, or falling
• Dizziness after a head injury, especially with vomiting or confusion
• A high fever with a stiff neck
• Numbness, tingling, or weakness that does not go away

Use the acronym FAST for stroke: Face drooping, Arm weakness, Speech difficulty, Time to call 911. When dizziness arrives suddenly alongside any of these, treat it as an emergency. Acting fast can save brain tissue and lives. If you are unsure, it is always safer to be checked.

How to get relief and care for yourself

For everyday dizziness that is not paired with the warning signs above, these steps often help you feel steadier and stay safe.

• Stop and sit or lie down the moment dizziness hits, so you do not fall. If you can, lie flat with your legs slightly raised until it passes.
• Move slowly. Get up from bed or a chair in stages: sit on the edge first, then stand once you feel steady.
• Drink fluids. Dehydration is a frequent and easily fixed cause. Sip water through the day, and eat regular meals to keep blood sugar steady.
• Avoid sudden head movements during a flare, and skip activities like driving or climbing until the spinning stops.
• Limit triggers such as alcohol, caffeine, tobacco, and excess salt, which can worsen inner ear and blood pressure issues.
• Rest and reduce screen time if your dizziness follows a concussion or migraine.

For inner ear vertigo like BPPV, a simple in-office maneuver called the Epley maneuver can reset the balance crystals and bring quick relief. A physical therapist trained in vestibular rehabilitation can teach exercises that retrain your balance over time. If a medication seems to be the culprit, ask your doctor before stopping it, since some drugs need to be tapered.

How dizziness is diagnosed

Because so many things cause dizziness, your doctor works like a detective. The visit usually starts with detailed questions: what the dizziness feels like, how long it lasts, what brings it on, and what other symptoms come with it.

From there, testing is matched to the suspected cause. Your doctor may check your blood pressure lying down and standing up, look in your ears, and watch your eye movements during position changes. Blood tests can find anemia, low blood sugar, or thyroid problems. If a heart rhythm issue is possible, you may get an electrocardiogram or wear a monitor.

When an inner ear cause is likely, hearing and balance tests help pinpoint it. If the brain or nerves are a concern, especially with red flag symptoms, imaging such as an MRI or CT scan looks for stroke, tumors, or other changes. Most people never need every test. The history and exam alone often reveal the answer.

When to see a doctor and which specialist

See your doctor if dizziness keeps coming back, lasts more than a few days, interferes with daily life, or causes falls. Also make an appointment if you cannot explain why it started or if it is getting worse.

Your primary care doctor is the right first stop and can handle most causes or point you to the right specialist. If an inner ear problem is suspected, an ear, nose, and throat doctor (otolaryngologist) or an audiologist manages it. If the cause seems to involve the brain or nerves, such as migraine, multiple sclerosis, or the aftermath of a concussion, a neurologist is the specialist who evaluates and treats it. Heart-related dizziness is handled by a cardiologist.

This page is educational and is not a diagnosis. A clinician who examines you is the only one who can tell you what is causing your dizziness and how to treat it. You can find a board-certified neurologist near you using the directory on this page, with thousands of providers listed across the country.

Frequently Asked Questions

Medical disclaimer: This content is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about a medical condition. If you have a medical emergency, call 911. Our editorial standards