My aunt is 50 years old and since early this morning she has been experiencing dizzy spells at times when she stands up. She stated that a couple of times last night she would close her eyes for a few seconds and when opened, the room would seem to be spinning. She has also been frequenting the bathroom with bowel movements more than usual today. She has been a little "sluggish" today also. She's only had water and a few saltine crackers today. Any ideas.........