You need to get examined to rule out a few things such as low blood pressure, postural hypotension (fall in
blood pressure, cervical spinal nerve compression, hypoglycemia (low
blood sugar), severe anemia, an underactive thyroid (called hypothyroidism), overactive thyroid (called hyperthyroidism), adrenal insufficiency (called Addison's disease), GERD or gastric reflux, and internal ear infections.
Please consult your PCP for primary examination followed by proper referral.
Take care!