Brief Answer:
Further tests.

Detailed Answer:
Greetings, madame! Welcome to HCM. I am Dr. Meriton. I carefully read your query.

This is a symptom that hase been triggered three days ago and has persisted after feeling better for one day. Indeed, dehydration can cause this problem. However, at this point it is better to take a stand point where we insist on finding the cause of this problem.

Dizziness can be caused by a lot of culprits, but, first, we are going to seek for the most common causes and, hopefully, exclude them or confirm and treat.

Although a characteristic of older ages, this problem can be generated by disturbances of the heart conduction system. In this area, I would initially recommend an EKG and, as I see fit, a 24-hour Holter rhythm registration, which is basically an EKG but registered in 24 hours. Also, an echocardiogram would be reasonable, to assess the heart structures, like valves and cardiac muscle, in size, function and movement.

Also, although rare at your age, but not impossoble, this symptom may come from a narrowing in your carotid arteries (neck arteries) by atherosclerotic plaque (fat build-up, in popular terms). Distally to the narrowing there is a low supply with blood, which means brain does not get enough oxygen and important nutrients, reflecting this with dizziness, near-fainting episodes, vision darkening etc. Therefore, an echo Doppler examination of these arteries is needed.

Another possible cause is what is called orthostatic hypotension. This term refers to the sudden drop in blood pressure when one briskly assumes standing position from lying or sitting position. If this is the case, then I recommend you to assume standing position gradually, not briskly, after having sat down for one to two minutes.

A usual cause of dizziness is the inner ear. It is a small organ that controls our balance and equilibrium. This would become more reasonable, if you had, some time in your life, constant or periodical problems with ear infections. In this case, you should see an otorhinolaringologist (the ENT doctor), and also discuss the possibility of using betaserc, its dosage and frequency.

I would also recommend a full biochemical panel, including electrolytes, and a complete blood count, to exclude electrolyte disturbances and a possible anaemia. When all the tests are back, then it would be appropriate to speak about a long-standing strategy for treating this problem.

I hope I was helpful and thorough with my answer. If you have further questions, I would be happy to help. Wish you a good health.

My regards,
Dr. Meriton

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