Fainting during or immediately after urination

Fainting during or immediately after urination – Micturition syncope.
It is most common in older men and usually occurs in the morning.
The exact cause of micturition syncope isn’t fully understood. Micturition syncope is rare and should be evaluated by a doctor.
It may be related to a drop in blood pressure that normally occurs at night, at quiet standing, in a warm environment, while straining to increase the flow of urine, or at the rapid emptying of a full bladder.
Prevention of micturition syncope depends on recognizing the precipitating circumstances and avoiding them.