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Feels lightheaded and nervous when hungry. Have hypertension and hypothyroidism. Any advice?

Some times lately when I m at work and running around because I am a pharmacy technician I ll be fine and then I ll end up getting lightheaded all of a sudden and then I start to feel really nervous like...I get so nervous that I m afraid I m gonna just fall down...I don t know if todays bout was because I was really hungry or what was happening. Could you tell me what may cause it...I do have highblood pressure that is controlled and hypothyroid that I take med for both
Asked On : Sat, 9 Mar 2013
Answers:  2 Views:  150
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General & Family Physician 's  Response
Hello and welcome to HCM,

I am Dr Mbong.

Some anti-hypertensive drugs have as side effects bouts of hypotension, especially after a long period of standing (orthostatic hypertension). The nervousness you feel during that period may be due to the effect of adrenaline and other sympathomimetic substanaces your body releases to normalize your blood pressure again.

The lightheaded and nervousness may be due to hypoglycemia (low blood suagr) from over-exertion or not having eaten enough in the morning. Hypoglycemia is worsened in people on some types of anti-hypertensive medication, because the block the body's ability to respond to and correct low blood sugar. Low blood sugar may also be more likely due to interactions between the anti-hypertension and the anti-hypothyroid medication.

To summarize your symptoms may have been due to hunger, or transitory low blood pressure due to the anti-hypertension drug or sustained low blood sugar with its use or from an interaction between the medications you are taking.

I advice you avoid too much standing if possible at work, eat a good break-fast and have some snacks with you. If the symptoms persist, please see your physician for check up,


Answered: Sat, 9 Mar 2013
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General & Family Physician Dr. Luchuo Engelbert Bain's  Response
Hi and thanks for your query,
common causes of ligtheadedness recognized are hypoglycemia, its not surprising if you were really feeling hungry. Remember the hunger centre in the brain is in the hypothalamus, and in face of hunger and while doing excessive, there could be a disequilibrium in rationing energy demand and available quantities. Monitoring of this equilibrium involves a series of chemical substances released by the hypothalamus.
If this condition becomes repetitive , you might need to consult an internist or a a cardiologist.
Thanks and hope this helps,
Luchuo, MD.
Answered: Sat, 9 Mar 2013
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