If you’re feeling dizzy right now, the most important thing is to sit or lie down immediately to prevent a fall. Stay still until the sensation passes, then get up slowly. Most dizzy spells are brief and harmless, but understanding what type of dizziness you’re experiencing helps you figure out the right next step.
What to Do During a Dizzy Spell
Lie down on a flat surface if you can, or sit in a sturdy chair. Keep your eyes open and fix your gaze on a stationary object in front of you. Avoid sudden head movements. If you need to stand up afterward, rise in stages: sit up first, pause for a moment, then slowly stand. Hold onto something stable as you do.
If the dizziness hits while you’re driving, pull over as soon as it’s safe. If you’re on stairs, sit down where you are and wait. Falls are the biggest immediate risk, so protecting yourself from injury matters more than anything else in the moment.
When Dizziness Is an Emergency
Dizziness is one of the warning signs of a stroke, especially when it appears suddenly alongside other symptoms. The CDC recommends the F.A.S.T. test: ask the person to smile (does one side of the face droop?), raise both arms (does one drift downward?), and repeat a simple phrase (is their speech slurred?). If any of these signs are present, call 911 immediately.
Other red flags that warrant emergency care include sudden trouble seeing in one or both eyes, sudden severe headache with no known cause, sudden confusion, or sudden numbness or weakness on one side of the body. Dizziness alone is rarely dangerous, but dizziness paired with any of these symptoms is a different situation entirely.
Figure Out What Kind of Dizziness You Have
The word “dizzy” covers two very different sensations, and telling them apart points you toward different causes and solutions.
Vertigo is a false sense of motion. The room spins, or you feel like you’re spinning even though you’re sitting still. This almost always originates in the inner ear, where tiny structures help your brain track your position in space. The most common cause is benign paroxysmal positional vertigo (BPPV), which happens when small calcium crystals in the inner ear shift out of place. Other inner-ear causes include viral infections of the vestibular nerve and Meniere disease, a condition involving excess fluid in the inner ear.
Lightheadedness feels vaguer. You might feel faint, woozy, or disconnected from your surroundings. This type of dizziness usually involves blood flow, blood sugar, or your nervous system rather than the inner ear. Anxiety and hyperventilation are surprisingly common culprits. Hyperventilation (breathing faster or deeper than your body needs) shifts the chemistry of your blood and can make you feel lightheaded even without a panic attack.
Common Causes You Can Address Yourself
Dehydration
When you lose enough fluid, your blood volume drops, and your heart has trouble delivering adequate blood flow to your brain. Symptoms include dizziness when standing and general lightheadedness. You don’t need to be severely dehydrated for this to happen. Drink water, and if you’ve been sweating heavily or had vomiting or diarrhea, choose something with electrolytes. The dizziness should improve within 15 to 30 minutes of rehydrating if fluid loss was the cause.
Low Blood Sugar
Blood sugar below 70 mg/dL is considered low and commonly causes dizziness, shakiness, and confusion. Severe low blood sugar (below 54 mg/dL) can be dangerous. If you suspect low blood sugar, eat or drink something with fast-acting carbohydrates: juice, regular soda, glucose tablets, or a handful of candy. If you take insulin or diabetes medication, this is a situation you should already have a plan for.
Standing Up Too Fast
Orthostatic hypotension is a temporary drop in blood pressure that happens when you go from sitting or lying down to standing. A drop of 20 mmHg or more in the top blood pressure number, or 10 mmHg in the bottom number, is considered abnormal. It’s more common in older adults, people on blood pressure medications, and anyone who’s been in bed for a while. The fix is straightforward: get up in stages, flex your calf muscles before standing, and stay hydrated.
Hyperventilation and Anxiety
If you’re breathing rapidly or feel short of breath alongside the dizziness, try slowing your breathing deliberately. Breathe in through your nose for a count of four, hold for a moment, and exhale slowly through pursed lips. This helps restore normal carbon dioxide levels in your blood, which is the actual mechanism behind the lightheadedness.
Check Your Medications
A long list of common medications can cause dizziness as a side effect. These include blood pressure drugs (diuretics, calcium channel blockers, ACE inhibitors, and ARBs), antidepressants, anti-anxiety medications like benzodiazepines, antihistamines, sleep aids, opioid pain medications, diabetes drugs, heart medications like beta blockers and nitrates, and drugs used for stomach cramps. If your dizziness started or worsened after beginning a new medication, or after a dose change, that connection is worth raising with your prescriber. Don’t stop a medication on your own, but do flag the timing.
How to Treat Positional Vertigo at Home
If your dizziness feels like spinning and gets triggered by specific head positions (rolling over in bed, looking up, tilting your head back), you likely have BPPV. A technique called the Epley maneuver can often resolve it in one or two sessions by guiding the displaced crystals in your inner ear back to where they belong.
The basic version for the right ear: sit on a bed and turn your head 45 degrees to the right. Quickly lie back with your shoulders on the pillow, keeping your head turned. Hold each position for about 30 seconds before moving to the next. You can find detailed step-by-step instructions through Johns Hopkins Medicine. Having a doctor confirm which ear is affected before you try this at home makes it more effective, since doing the maneuver on the wrong side won’t help.
People with neck or back problems, vascular conditions, or retinal detachment should check with a healthcare provider before attempting the Epley maneuver.
When Dizziness Keeps Coming Back
Chronic or recurring dizziness that doesn’t resolve with hydration, blood sugar management, or positional maneuvers may benefit from vestibular rehabilitation therapy. This is a specialized form of physical therapy designed to retrain your brain’s balance system. Specific exercises include gaze stabilization, where you focus on a target while slowly moving your head side to side or up and down, and balance retraining, which progresses from standing with feet together to standing on one foot.
Vestibular rehab works best for people whose dizziness stems from inner-ear damage, vestibular nerve problems, or post-concussion symptoms. A typical course runs several weeks, with exercises you practice daily at home between sessions. Most people see meaningful improvement, though it requires consistency.
If your dizziness is accompanied by hearing loss, ringing in the ears, or a feeling of fullness in one ear, those symptoms point toward conditions like Meniere disease or labyrinthitis that need medical evaluation rather than home management alone.