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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