Lightheadedness and dizziness often stem from reduced blood flow to the brain. Common triggers include dehydration, sudden blood pressure drops, or standing up too quickly.
Frequent Causes
Dehydration from vomiting, diarrhea, fever, or insufficient fluid intake reduces blood volume, impairing brain perfusion. Low blood sugar, especially if skipping meals, deprives the brain of energy, while orthostatic hypotension occurs when rising abruptly from sitting or lying. Medications, allergies, colds, or anxiety can also contribute by affecting blood pressure or causing hyperventilation.
Serious Concerns
Persistent symptoms may signal heart issues like arrhythmias, anemia from blood loss, or inner ear problems such as vertigo. Stroke, internal bleeding, or conditions like diabetes and hypertension warrant immediate attention if accompanied by chest pain, confusion, or weakness.
Next Steps
Drink water, eat balanced meals, and rise slowly to ease mild episodes. Consult a doctor promptly for ongoing or severe dizziness, as self-diagnosis risks missing underlying issues.