Dizziness and lightheadedness, what could be the cause?

Not enough info. Need more information to figure this out. What makes it better or worse ? Have you seen a doctor about this yet?
Numerous. Many, many, many possible causes. It is far to complex a subject to answer in this limited forum. Best to discuss with your doctor.

Related Questions

I am experiencing dizziness/lightheadedness directly from lisinopril. What could be possible causes of this besides side effects?

Check BP. A low BP might do it, check to see your reading. Discuss your symptoms with your prescriber. Read more...
Dizziness and drugs. You should speak to the physician (p) who ordered the Lisinopril about your problem. At the very least, your blood pressure should be checked to make sure it is not too low. If it isn't, you may need some blood work to check your electrolytes and blood count. If you are anemic, that could be the cause of your dizziness. See your p and get a check up to find the answer to your question. Read more...

What causes lightheadedness and dizziness?

Lots of things! Sorting out the significance of those symptoms depends on accompanied circumstances (precipitating events, duration, palpitations), objective findings (abnormal cardiac or neurologic exam), age (younger, older), etc. Often these may be relatively benign (if younger patient and not objective abnormalities), but may also be a harbinger of more serious underlying conditions. Talk to your doctor. Read more...
Vertigo. If drug side effect is excluded, far more common cause of feeling of one or more of lightheadedness, spinning, tilting, falling, losing balance is vertigo. Diagnostic difficulty occurs when symptoms are mild. Expensive cardiac work up is often done. Many a times some cardiac abnormality e.G bradycardia or severe carotid stenosis is found and treated but dizziness persists until vertigo is treated. Read more...

What another symptoms can vertigo cause besides for dizziness and lightheadedness?

Vomiting. Vertigo is the sensation of movement when you are not moving. For most people this causes nausea and vomiting. The sensation comes from ear and brain centers that are designed for balance and orientation. When they are off kilter we sense movement and get very disoriented. The cause may be quite complex. A thorough evaluation would be appropriate. Read more...

Migraine-associated vertigo, can this cause severe lightheadedness as opposed to actual spinning or dizziness?

Sure it can. While the most traditional & specific definition of what is known as vertiginous migraine or as you say "Migraine-associated vertigo" is that of actual vertiginous sensations or spinning/whirling/tumbling/moving feeling either followed by or preceded by migraine headaches there's nothing that says that a person couldn't simply have an event of lightheadedness or disconnected feeling & headaches. Read more...