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Symptom Checker

Step 4: Read and complete the decision guide to learn more about your symptoms.

Blacking Out, Fainting, or Loss of Consciousness

Call for immediate medical help. Call 911 if necessary. Do not attempt to drive.

You will need prompt evaluation. There are multiple possibilities:

- Low blood sugar

- Dehydration

- Heart related problem

- A seizure

- Alcohol or drug effect


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Disclaimer: This content should not be considered complete and should not be used in place of a call or visit to a health professional. Use of this content is subject to specific Terms of Use & Medical Disclaimers.