Q. What are the reasons for palpitations and dizziness?

Answered by
Dr. Sadaf Mustafa
and medically reviewed by iCliniq medical review team.
This is a premium question & answer published on May 28, 2016 and last reviewed on: Mar 21, 2020

Hi doctor,

Over a month ago, I had an episode where my heart started racing out. I got lightheaded and dizzy. I thought it as a heart attack. However, I went to my doctor and he listened to my heart beat, checked my pulse and my blood pressure. He said that everything was fine and I just had a panic attack. However, I did not get convince. I was scared and anxious, so went to the ER. There they also took my pulse and blood pressure along with an EKG and a chest x-ray. The doctor said that I was fine, and I am not going to have any heart attack. He then listened to my heart and told me that it was just stress and anxiety. Can you help me out and relieve my worry?

Dr. Sadaf Mustafa

General Medicine Internal Medicine


Welcome to icliniq.com.

There are various reasons for having palpitations followed by dizziness.

The most important one being an abnormal heart rate or rhythm which starts suddenly and terminates abruptly. This could be detected by different monitors that you can carry with you and these devices can pick up the abnormal heart beats.

Second of all is a thyroid disease. Excessive thyroid hormones can cause stimulation of sympathetic nervous system and you will feel hot, flushed with palpitations.

Weight loss and diarrhea along with excessive appetite may also occur.

Last but not the least is the most common type and is called as vasovagal phenomena. It happens when you suddenly change position from sitting to standing; your body does not have enough time to compensate and you may feel having racing heart beats followed by dizziness.

A panic attack is a diagnosis of exclusion and I would not jump to this conclusion as of now.

I believe that you experienced the last type I mentioned above that is vasovagal. If you get another episode then I would suggest seeing a cardiologist.

Try cutting down the caffeine intake (including soda and other caffeinated beverages), I request your doctor to check your thyroid profile.

For further information consult an internal medicine physician online --> https://www.icliniq.com/ask-a-doctor-online/internal-medicine-physician

Was this answer helpful?



This is an Ad. icliniq or icliniq doctors do not endorse the content in the ad.

Ask a QueryAsk a Query Consult by PhoneConsult by Phone Video ChatVideo Chat
Also Read Answers From:

Comprehensive Medical Second Opinion.Submit your Case

Related Questions & Answers

Why do I get anxiety and hot flushes at 4 PM everyday?

Query: Hello doctor, I recently was referred to a renal specialist for low sodium levels by my primary care physician. After a complete kidney workup, he said that they were functioning well. But, he changed my hypertension medicine from Lisinopril to Losartan and discontinued my diuretics. As a result, my...  Read Full »

My TSH - 5.96, free T3 - 2.49, free T4 - 0.76, Age 33.Do I need thyroid medicine?

Query: Hello Doctor, Free TSH 5.96, freeT3 2.49, freeT4 0.76. Age 33 years. Symptoms - weight gain, depression, late periods since second delivery and 2 years back. Do I need thyroid medicine?  Read Full »

Why are my arm muscles shaking?

Query: Hello doctor, I am a 24 year old male. I work as a software engineer. Over few days, suddenly my arm muscles are shaking for a few seconds and it will be normal after sometime. Also sometimes, I am not feeling well. Are these the symptoms of diabetes or any other health issues?  Read Full »



Ask your health query to a doctor online?

Ask an Internal Medicine Physician Now

* guaranteed answer within 4 hours.
Enter Your Health Query
You can upload files and images in the next step.



Disclaimer: All health Q&As published on this website is not intended to be a substitute for professional medical diagnosis, advice or treatment by a trained physician. Seek the advice from your physician or other qualified health-care providers with questions you may have regarding your symptoms and medical condition for a complete medical diagnosis. Do not delay or disregard seeking professional medical advice because of something you have read on this website.