Many causes : Daytime dizziness and chronic fatigue in a 20 year old can derive from #fibromyalgia underactive thryroid, nutritional prob, fatigue, anima, mono, an occult infection, poor sleep habits, sleep disturbed by nightmares or pain, a viral illness, and hyperventilation; among other causes. A medical doctor who physically examines you ; asks appropriate questions is best person to evaluate ; decide.
Answered 2/27/2016
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