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A member asked:
Greying out of vision 'during' (not after) a hard cough fit (after inhaling). this greying out becomes white patches in dark during coughing. normal?
3 doctors weighed in across 2 answers
Yes: This is a normal transient reaction to a hard cough or other types of valsalva maneuvers (sneeze, hard bowel movement, etc). As long as the symptoms resolve quickly, there is nothing to worry about.
Answered 10/24/2017
4.7k views
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Yes: Coughing can cause momentary increased pressure in eyes that can slow blood flow and cause these symptoms. Also, can 'activate' vagal nerve which also slows blood flow.
Answered 9/28/2016
4.7k views
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