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can dehydration cause fainting

A 19-year-old female asked:
Dr. Gerald Mandell
52 years experience Nuclear Medicine
Dehydration: Dehydration is common cause of lightheadedness. Other causes are orthostatic hypotension, flu and colds,anxiety and stress, hyperventilation,sudden la ... Read More
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A 21-year-old male asked:
Dr. Joel Gorfinkel
56 years experience Cardiac Electrophysiology
No: As long as you are fully conscious and thinking normally no brain damage. Even fainting due to dehydration is unlikely to cause brain damage in a heal ... Read More
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A 40-year-old member asked:
Dr. Rick Koch
Dr. Rick Koch answered
22 years experience Cardiology
Variable: Fainting generally only occurs in the most severe cases of dehydration.
A 32-year-old member asked:
Dr. Bennett Machanic
52 years experience Neurology
You bet it could: Of course, depends on quantity of booze ingested, but alcohol is both a sedative/tranquilizer, a soporific, and if in high quantities, a toxin.
A 22-year-old male asked:
Dr. Tanya Russo
25 years experience Pediatrics
Vasovagal: Many people, especially young ones, get a vasovagal reflex (dizziness, sweating, fainting, etc) with certain procedures. Although this can be very f ... Read More
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A 21-year-old female asked:
Dr. Gurmukh Singh
49 years experience Pathology
Water: Water will take care of the dehydration. Wish you good health! - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, n ... Read More
A 36-year-old member asked:
Dr. J. Yusuf Erskine
32 years experience Holistic Medicine
Complex answer: If this has happened more than once you need to see your doctor to determine what is going on and the cause.
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A 25-year-old female asked:
Dr. Derrick Lonsdale
73 years experience Preventive Medicine
If you are a smoker: It is the cigarettes that are doing this. It also depends on whether your diet is good or not
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A 34-year-old member asked:
Dr. Eric Levin
41 years experience Psychiatry
Many things: Could be anxiety or medical problems. I suggest you see your family physician. Make sure you ask your family members if they have ever had anything li ... Read More
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1 comment
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A 36-year-old member asked:
Dr. Samuel Freedman
9 years experience Pediatrics
Hypotension: This sounds like a drop in blood pressure. The body tries to recover from dropping pressure by speeding up heart rate.
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9 thanks

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