Common "Vasovagal Syncope" queries answered by top doctors | iCliniq

Vasovagal Syncope

Vasovagal syncope is fainting caused due to drop in blood pressure and decreased blood supply to the brain. The drop in blood pressure is caused due to alteration in the nerve signals to the heart. Prolonged standing, intense heat, dehydration, fasting, etc., are the cause of vasovagal syncope.

Recently Answered Questions Recently Answered Questions

All the answers published in this website are written by verified medical doctors, therapists and health experts. The Content has been moderated by iCliniq medical review team before publication. Post your medical clarifications on iCliniq by choosing the right specialty and get them answered. Your medical queries will be answered 24/7 by top doctors from iCliniq.

I feel extreme muscle tension and blackout after extreme laugh. Is this concerning issue?

Query: Hello doctor, While playing a game something happened that caused me to laugh extremely hard. It was just one yelp or laugh, but it was very strenuous, I could feel a lot of muscle tension if I remember correctly. I could tell I was about to blackout or pass out, my vision started to fade away, bu...  Read Full »

Dr. Suresh Kumar G D

Answer: Hello, Welcome to You have posted an interesting and unusual query. At the outset, your description of the event does not look worrying. You have done some relevant research. It is true that sometimes laughter can induce vasovagal syncope. It can happen with any extreme emotion, s...  Read Full »

Is ocular toxoplasmosis related to vasovagal syncope?

Query: Hi doctor, My daughter has recently been diagnosed with ocular toxoplasmosis. We do not know if it is congenital. She was born with strabismus in her right eye and now slightly in her left eye. She also has been diagnosed with vasovagal syncope. Is this all related? Should I have her checked by an ...  Read Full »

Dr. Archana. G.

Answer: Hi,Welcome to understand your concern but it is difficult to find out that diagnosis when the baby is born. Kindly get IgG and IgM antibodies for toxoplasma so that we will know how long she has been infected and also get blood culture and sensitivity reports to give antibiotics and pl...  Read Full »

Why did my 14-year-old daughter faint in the morning?

Query: Hello doctor, My 14 years old daughter fainted three days back in the morning when she woke up to study for her test. Her pulse was normal during the episode. She is good now, but I want to know what could have caused it to prevent further occurrence.  Read Full »

Dr. Hardika Kothari

Answer: Hello, Welcome to I hope she is doing fine now. There are numerous causes for fainting (syncope), such as dehydration due to improper intake of water, anemia, or menstrual cycle may also lead to syncope in female adolescents. It can also be due to vasovagal, which is the emotional ups...  Read Full »

What caused the four-second arrhythmia when I stood up?

Query: Hello doctor, I am a 17-year-old male. About a month ago, I passed out after watching a movie first responders came and said I was fine until they asked me to stand up, and that is when a four-second arrhythmia occurred. I was rushed to the emergency room and was told I needed a pacemaker, and the...  Read Full »

Dr. Muhammad Zohaib Siddiq

Answer: Hi, Welcome to Thanks for the query. The transient loss of consciousness with loss of postural tone but with spontaneous and complete recovery is called syncope. The most common in the general population is vasovagal syncope. Please answer some questions so that I may rule out the cau...  Read Full »

Before two weeks, I fainted for a prolonged period on my bed. Is it due to vasovagal syncope?

Query: Hi doctor,I am 17 years old. Before two weeks, I got fainted in bed for a prolonged period. After standing, I went to emergency and I was diagnosed with arrhythmia. The doctor told me that I need to have a pacemaker. Then I went for a second opinion and the doctor told me that it is a simple case of...  Read Full »

Dr. Ilir Sharka

Answer: Hi, Welcome to It seems to be a vasovagal episode and it leads to loss of consciousness. This gets support from postural tachycardia. It is necessary to review the cause of the arrhythmia. A cardiac ultrasound can be done. A tilt test and holter monitor can be done to identify the cau...  Read Full »

Is it normal for the heart to stop for 11 seconds during vasovagal syncope?

Query: Hi doctor,I am a 21-year-old male and take no medications. Four years ago, I started having vasovagal syncope episodes that have increased in frequency over the years, and I have now passed out from it around ten times. My triggers for it are blood, needles, and damage to the wrists. My clinic recom...  Read Full »

Dr. Muhammad Zohaib Siddiq

Answer: Hi, Welcome to Thanks for the query. First thing you should know is that vasovagal syncope is not dangerous. Try to avoid circumstances that lead to syncope. When you feel that you are having syncope (prodrome), escape from that area or scene. Sit down on the floor in a squatting posi...  Read Full »

ask-doctor-img Ask a Doctor Online

* Your first query consult is free!

Search for a Health Issue

Disclaimer: No content published on this website is intended to be a substitute for professional medical diagnosis, advice or treatment by a trained physician. Seek advice from your physician or other qualified healthcare 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. Read our Editorial Process to know how we create content for health articles and queries.