Dizziness

Benign Paroxysmal Positional Vertigo (BPPV)

BPPV is the most common cause of vertigo, occurring when tiny calcium carbonate crystals in the inner ear become dislodged and migrate into the semicircular canals, where they disrupt normal balance signals. It causes brief but intense episodes of spinning dizziness triggered by specific head movements such as looking up, rolling over in bed, or bending forward. BPPV can be effectively treated with a simple repositioning maneuver called the Epley maneuver, which guides the displaced crystals back to their proper location.

Low Blood Pressure (Orthostatic Hypotension)

Orthostatic hypotension occurs when blood pressure drops significantly upon standing, causing lightheadedness, dizziness, or fainting as the brain temporarily receives insufficient blood flow. It is common in older adults, people taking blood pressure medications, and those who are dehydrated. Rising slowly from sitting or lying positions, staying well hydrated, and wearing compression stockings can help manage this condition.

Dehydration

Inadequate fluid intake reduces blood volume, which can lower blood pressure and decrease blood flow to the brain, resulting in lightheadedness and dizziness. Dehydration can result from insufficient water intake, excessive sweating, vomiting, diarrhea, or certain medications like diuretics. Drinking adequate fluids throughout the day, especially during hot weather or physical activity, is the simplest way to prevent dehydration-related dizziness.

Anemia

When your body lacks sufficient healthy red blood cells to carry oxygen to your tissues, the reduced oxygen delivery to the brain can cause dizziness, lightheadedness, and fatigue. Iron-deficiency anemia is the most common type and is easily diagnosed with a blood test. Treatment depends on the underlying cause but may include iron supplements, dietary changes, or addressing the source of blood loss.

Anxiety and Panic Disorders

Anxiety can cause dizziness through multiple mechanisms, including hyperventilation (which alters blood carbon dioxide levels), increased muscle tension in the neck and shoulders, and heightened sensitivity to normal body sensations. People with panic disorder may experience intense dizziness during panic attacks, which can create a fear of dizziness that perpetuates the cycle. Cognitive behavioral therapy, relaxation techniques, and sometimes medication can effectively address anxiety-related dizziness.

Medication Side Effects

Many commonly prescribed medications can cause dizziness as a side effect, including blood pressure medications, antidepressants, anti-seizure drugs, sedatives, and certain antibiotics. The dizziness may occur when starting a new medication, increasing a dose, or through interactions between multiple medications. If you suspect medication-related dizziness, consult your prescribing provider rather than stopping medication on your own, as abrupt discontinuation of certain drugs can be dangerous.

Vestibular Neuritis

Vestibular neuritis is an inflammation of the vestibular nerve, usually caused by a viral infection, that causes sudden, severe vertigo lasting days to weeks. It typically presents with intense spinning dizziness, nausea, vomiting, and difficulty with balance, but unlike labyrinthitis, it does not affect hearing. Most cases resolve gradually over several weeks with supportive care, and vestibular rehabilitation exercises can help speed recovery.

The Epley maneuver is a series of specific head and body position changes designed to move displaced inner ear crystals out of the semicircular canals. It can be performed at home after being taught by a healthcare provider and is effective in resolving BPPV symptoms in about 80 percent of cases with one or two treatments. If you have been diagnosed with BPPV, ask your doctor or physical therapist to demonstrate the correct technique for your specific type.

Dehydration is a common and easily preventable cause of dizziness. Aim to drink at least eight glasses of water daily, and increase intake during hot weather, exercise, or illness. If you experience dizziness when standing, drinking a glass of water before getting up and rising slowly can help maintain adequate blood pressure.

If you experience lightheadedness when standing up (orthostatic hypotension), training yourself to change positions gradually can help prevent dizziness. When getting out of bed, sit on the edge for a minute before standing. When standing from a chair, pause briefly and ensure you feel stable before walking. Clenching your leg and abdominal muscles before standing can also help push blood back toward the brain.

Vestibular rehabilitation therapy (VRT) involves specific exercises designed to improve balance and reduce dizziness by retraining the brain to compensate for inner ear problems. Simple exercises like focusing on a fixed point while slowly turning your head, or practicing balance on uneven surfaces, can be done at home. A physical therapist specializing in vestibular disorders can design a personalized exercise program for your specific condition.

Both caffeine and alcohol can affect the inner ear and cardiovascular system in ways that worsen dizziness. Caffeine can increase anxiety and alter blood flow, while alcohol is directly toxic to the vestibular system and impairs balance. Reducing or eliminating these substances, particularly if you are experiencing recurrent dizziness, can help alleviate symptoms.