Fainting
A temporary loss of consciousness due to reduced blood flow to the brain, which can have cardiac, neurological, or metabolic causes.
Conditions associated with fainting
The following conditions have been associated with fainting in medical literature. This is informational and not a diagnosis.
Tests providers may use to investigate fainting
When investigating fainting, a healthcare provider may order one or more of the following laboratory tests. Test selection is a clinical decision made by a qualified professional.
CBC with Differential
Measures red blood cells, white blood cells, and platelets to help evaluate overall health and detect disorder...
Comprehensive Metabolic Panel (CMP)
Measures 14 substances in the blood to assess kidney and liver function, electrolyte balance, and blood sugar ...
Fasting Glucose
Measures blood sugar after fasting to screen for diabetes and prediabetes....
Thyroid Panel
Comprehensive thyroid testing including TSH, free T4, and free T3....
Symptoms commonly seen alongside fainting
Dizziness
A feeling of lightheadedness, unsteadiness, or faintness, which can be caused by many conditions....
Excessive Sweating
Sweating more than is needed to regulate body temperature, which can accompany fever, anxiety, hypoglycemia, o...
Fatigue
A subjective feeling of tiredness characterized by a lack of energy and motivation....
Lightheadedness
A feeling of being about to faint or lose balance, which can have many causes....
Nausea
A sensation of unease in the stomach together with an urge to vomit....
Pale Skin
Unusually light or pale skin that can be a sign of anemia, reduced blood flow, or low blood pressure....
When to seek care
Seek care from a qualified healthcare provider if fainting is severe, persistent, worsening, or accompanied by concerning symptoms. If you think you have a medical emergency, call your local emergency number immediately.
Frequently Asked Questions
What does the symptom fainting mean?
Fainting is a health sign or symptom described in medical literature. A temporary loss of consciousness due to reduced blood flow to the brain, which can have cardiac, neurological, or metabolic causes.
Which conditions are associated with fainting?
Fainting has been reported in association with 2 conditions in the medical literature we index, including Fainting (Syncope), Hypotension. These associations do not mean you have any of these conditions.
Should I see a doctor about fainting?
You should discuss any persistent or concerning symptoms with a qualified healthcare provider. This website does not provide diagnosis. If you have severe symptoms or signs of a medical emergency, seek care immediately.