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    WebMD Symptom Checker

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    WebMD Symptom Checker

    Drowsiness, Fainting, Headache and Lightheadedness

    WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms drowsiness, fainting, headache and lightheadedness including Fainting (vasovagal syncope), Sleep apnea, and Medication reaction or side-effect.

    There are 103 conditions associated with drowsiness, fainting, headache and lightheadedness. The links below will provide you with more detailed information on these medical conditions from the WebMD Symptom Checker and help provide a better understanding of causes and treatment of these related conditions.

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