
What Causes Intermittent Light-headedness And Heart Palpitations?

I would explain as follows:
Detailed Answer:
Hello!
Welcome and thank you for asking on HCM!
I carefully passed through your question and would explain that your symptoms do not seem to be related to any cardiac disorders.
You should know that some isolated PVCs can be related to anxiety of physical activity.
So, they do not indicate any serious medical condition.
From the other hand, as all your performed cardiac tests have shown a normal heart function and structure, there is nothing to worry about.
Thyroid dysfunction and chronic anemia have been excluded too, from your performed tests.
So, to conclude, I agree with your doctor that anxiety could be the cause underlying your symptoms.
I understand that you have not felt anxious before, but you should know that anxiety can cause different manifestations that may mimic a lot of disorders including the brain, the heart and other organs.
So, I would recommend starting alprazolam 0.25mg three times daily for some days. If your symptoms are improved by this drug, it would be indicative of anxiety as the main cause underlying your troubles. In such case, consulting with a psychiatrist and discuss on the possibility of starting an antidepressant would be needed.
Meanwhile, I recommend continue performing a lot of physical activity because it is the best thing to do to maintain a healthy heart and mind.
Hope to have been helpful!
Kind regards,
Dr. Iliri

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