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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My mother had a sudden 1-minute episode of unconsciousness with varying blood pressure, and later she was normal. Is it a concern?

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 »

Is there any abnormality in my cousin's reports?

Query: Hi doctor,I am asking query for my cousin. He met with an episode of syncope and head injury a month ago. He was in ICU for a week. He had this in the early morning while he was in the bathroom. Also, he had a high fever at that time. There is no previous history as such. Only he used to take medic...  Read Full »

Dr. Hitesh Kumar

Answer: Hello, Welcome to Kindly answer my questions as I would like to know some details of the problem. What was the patient doing while he had syncope? Was he simply standing or sitting on the commode or passing urine in the standing position?Did he felt anything wrong in his body before los...  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 ar...  Read Full »

For the past five years, I have been having severe headaches and feeling feverish when exposed to the strong smell. 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 headaches. Avoid...  Read Full »

Are these head-reeling episodes sue to stroke, seizure or syncope?

Query: Hello doctor, I have consulted you over this forum regarding the health of my mother (59 years), who is under treatment for hypothyroidism (Eltroxin 50 mcg), hypertension (Olmezest 20 mg), osteoarthritis (Gemcal D3, Kondro OD) and mild anemia Hb 10.6 [11.5 - 15] (Folvite). I would like to request yo...  Read Full »

Dr. Shivam Om Mittal

Answer: Hello, Welcome to It is difficult to comment if the episodes are solely syncope or fainting spell due to orthostatic hypotension or abnormal heart rhythm. I agree with Holter monitoring. I would also, recommend EEG (electroencephalogram) study for one hour to make sure we are not deal...  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 6.3 mmol/L. As this was regular, I checked my blood pressure during dizziness which was 110/68 mm of Hg. I told my docto...  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 »

I experienced presyncope, palpitation, and tunnel vision a few weeks back. Can low potassium levels cause these symptoms?

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...  Read Full »

What is the cause of 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 »

I have had episodes of syncope and fainting due to fear of needles and blood. Is there any technique to overcome this?

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 suffer from fainting episodes, dizziness, severe exhaustion, and chest pain. Can you please review my reports?

Query: Hi doctor, I suffer from fainting episodes, dizziness, severe exhaustion, and chest pain. I have had a brain MRI, ECG, heart monitor, and tilt test. All were clear except the tilt test, where I showed a vasodepressor response. I have had these symptoms for a year. I am not taking any medication at t...  Read Full »

Dr. Muhammad Zohaib Siddiq

Answer: Hi, Welcome to I understand your concern. Midodrine (vasopresor and antihypotensive) is good for this type of syncope. But I would suggest the following measures first to avoid the side effects of the medicine: Know when and under what circumstances you have such a syncopal attack and...  Read Full »

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