What are the causes of light headed?
 Caused by drop in blood pressure, fever, diarrhea, loss of hydration from vomiting or dizziness, high blood pressure, dehydration, medications, postural or orthostatic hypotension, diabetes, endocrine disorders, hyperventilation, heart conditions, vasovagal syncope, Heart attack, Heavy menstrual bleeding, abnormal heart rhythm (arrhythmia). 