Lightheadedness
A feeling of being about to faint or lose balance, which can have many causes.
What is Lightheadedness?
Lightheadedness is a symptom that people may experience for many reasons. It can be related to infections, chronic conditions, injuries, medication effects, or other health changes. The presence of this symptom alone does not diagnose any condition.
If you have Lightheadedness that is severe, persistent, or accompanied by other warning signs, contact a qualified healthcare provider.
Possible conditions associated with Lightheadedness
The following conditions have been associated with Lightheadedness. Only a health professional can determine the underlying cause.
Hypotension
Abnormally low blood pressure that can cause dizziness, lightheadedness, and fainting.
Postural Orthostatic Tachycardia Syndrome
A disorder of the autonomic nervous system in which standing up causes an abnormal rise in heart rate, leading to dizzin...
Supraventricular Tachycardia
A condition in which the heart suddenly beats very fast because of abnormal electrical signaling above the ventricles, c...
Related symptoms
When to seek medical care
Seek urgent care if Lightheadedness is severe, sudden, or occurs with chest pain, difficulty breathing, confusion, severe weakness, or other serious symptoms.