Maybe be due to hypoglycemia... Dizziness and vertigo has many other possible causes, including inner ear disturbance, motion sickness and medication effects. Sometimes it's caused by an underlying health condition, such as poor circulation, infection or injury,Meniere's disease,Benign paroxysmal positional vertigo (BPPV),hypotension,migraine,Some neurological disorders such as Parkinson's disease and multiple sclerosis,anemia,dehydration etc...Consult nearest ent surgeon they will help you further Regards.

Benign paroxysmal positional vertigo causes brief episodes of mild to intense dizziness. Benign paroxysmal positional vertigo is usually triggered by specific changes in the position of your head. This might occur when you tip your head up or down, when you lie down, or when you turn over or sit up in bed. Consult Ent surgeon for further evaluation and treatment...