Common "Syncope" queries answered by top doctors | iCliniq


The medical term for fainting or passing out is syncope. Syncope is caused by a temporary shortage of blood that reaches the brain. The symptoms include dizziness, cold and clammy skin, nausea, headache, blurry vision, and blacking out. The types of syncope are reflex syncope, cardiac syncope, orthostatic syncope, and cerebrovascular syncope.

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Can low potassium levels cause presyncope? Kindly clarify.

Query: Hi doctor, A few weeks ago, I experienced presyncope. I felt a palpitation, and when I checked my pulse, it was not beating for a few seconds. I then got tunnel vision and put my head between my legs. When I came back up, I saw stars. I went to the ER and had a normal EKG. They found that my potass...  Read Full »

Dr. Sagar Ramesh Makode

Answer: Hi, Welcome to It can precipitate arrhythmias in the heart, which can manifest similarly. But, 3.1 is not very low to cause arrhythmias in a healthy heart. So it is worthwhile to evaluate you as we can not explain it just because of potassium. Was there just a presyncope or repeated e...  Read Full »

My husband fell out of the bed and his entire body was shaking. Was it a seizure?

Query: Hello doctor, My husband fell out of bed after sleeping for 4 hours and was unconscious. He recalls waking up and looking at the clock and seeing that it was 4 am and was confused about why he was awake, and he said the next thing he knew, he was on the floor. When I found him beside the bed, he was...  Read Full »

Dr. Hitesh Kumar

Answer: Hello, Welcome to I would like to know details about the incident: 1) At what time did you find him on the floor? 2) Was he conscious and responding to your commands during full body shaking? 3) Was he continuously shaking for those 2 hours? Or was he shaking intermittently during ...  Read Full »

Does losing consciousness for a minute pose a problem?

Query: Hello doctor, My mother felt dizzy and sweaty, eventually fainted for about a minute. She was not responding to anything and after that woke up to the sound of calling her. Her blood pressure reading shorty after was 99/55. She ate some stuff very little here and there and it went up to 107/64. I am...  Read Full »

Dr. Muhammad Zubayer Alam

Answer: Hello, Welcome to I can understand your concern. According to your statement, your mother has a history of dizziness, sweating, and fainting for a minute. The clinical features from which your mother was suffering may result from various underlying health conditions like low blood sugar...  Read Full »

What is the reason for my feeling weak and numb throughout the day for almost a month?

Query: Hello doctor, I have been feeling weak, numb, and almost passing out throughout the day randomly for a month. I had a CTA in the ER, and they sent me home with this report. And they said to check with neurology, but not to worry. I have read and it says not to worry unless you are symptomatic, which...  Read Full »

Dr. Sadaf Mustafa

Answer: Hi, Welcome to You have hypoplastic right intracranial vertebral and basilar arteries and severe hypoplasia of the right posterior cerebral artery (the P1 segment). But with a patent right posterior communicating artery, which is supplying blood to the right posterior circulation. In my...  Read Full »

Why am I blacking out and feeling light-headed?

Query: Hi doctor, I am an 18 year old girl and recently I have had trouble with conscious blacking out. The first time it happened was this month, and I have not had any trouble until a few days ago where it happened three to four times in one day. I will be standing or just walking around and start to fee...  Read Full »

Dr. Sagar Ramesh Makode

Answer: Hello, Welcome to This is fainting. I need to know some more information regarding the symptoms. Has it followed some kind of stress, dehydration, prolonged standing especially in hot weather, panic, fear or pain? Because it is common for fainting to follow all these events, and it is...  Read Full »

Is it normal to have changes in heart rhythm?

Query: Hi doctor, I hear a weird rhythm in my heart for a year. Sometimes, my heart pumps faster, and sometimes, it pumps slowly. I feel like catching my breath. I also have a tight feeling in my chest. It happened around four times last year. Then, I did not hear it for months. I thought that it has go...  Read Full »

Dr. Muhammad Zohaib Siddiq

Answer: Hi, Welcome to These palpitations occur due to differences in heart rhythms. Most commonly, it occurs due to premature beats of extrasystoles followed by slow rhythms and then normal rhythm occurs again. It is not a serious issue mostly. But it is serious in some conditions. If you ha...  Read Full »

I get headaches and feel feverish from strong smells. Why?

Query: Hello doctor, I am a 23-year-old male with a height of 5.9 to 5.10 feet and a weight of around 66 to 67 kg. I neither smoke nor drink. For the past many years (more than five years ), I have been having severe headaches (throbbing aches around the eyes, back of the head, and forehead). I feel feveri...  Read Full »

Dr. K. Shanmuganandan

Answer: Hello, Welcome to I have gone through the problem in detail. You seem to have these issues: Vascular headache. Environmental triggers cause nasal congestion. Vaso vagal syncope. Mild anxiety. You need a detailed evaluation for the same. Please take some analgesics for headache...  Read Full »

I have episodes of syncope and fainting. Please help.

Query: Hi doctor, I am 47 years old and going to undergo gallbladder surgery under general anesthesia. It seems I have a fear of needles and blood. During blood donation and one dental procedure, I have had episodes of syncope and fainting due to fear. It was managed both times by making me lie down and r...  Read Full »

Dr. Sukhdev Garg

Answer: Hi, Welcome to Hope you are doing well. Regarding your query, it seems you are having vasovagal episodes during stress. Needles, blood, OT (operation theatre) environment, and so on are all triggers for this kind of episode. These are not uncommon among patients at your age. There is...  Read Full »

I have been experiencing dizziness, lightheadedness and have symptoms of low blood sugar. Why?

Query: Hello doctor, I have been experiencing dizziness and lightheadedness feeling and also symptoms of low blood sugar. However, when I checked my blood sugar with a monitor, it was 113.51 mg/dL. As this was regular, I checked my blood pressure during dizziness which was 110/68 mm of Hg. I told my doctor...  Read Full »

Dr. Vedprakash Verma

Answer: Hi, Welcome to Your symptoms could be related to epilepsy seizures. The EEG (electroencephalogram) shows many muscle and ocular artifacts. There is also focal slowing in the fronto- central leads, which could be related to these attacks of falling. I would also recommend performing an...  Read Full »

After a strange episode, I was unable to remember anything. Why?

Query: Hi doctor, I had a strange episode the other day where I was driving, and it was like I lost and had been in a trance or asleep. When I snapped out of it, I was not sure where I was. I thought I was lost at first and did not recognize anything, although I take this trip daily. I had not been sleepy,...  Read Full »

Dr. Mehmet Akif Camkurt

Answer: Hi, Welcome to The episode you describe fits into either a syncope or a dissociation. I think your neurologist is right. One episode of syncope is not a big problem. However, my further recommendation is to make an appointment with a cardiologist also. Some cardiac problems such as arrh...  Read Full »

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