Micturition syncope
The temporary loss of consciousness upon urinating. (Syncope is the temporary loss of consciousness or, in plain English, fainting). The situations that trigger this reaction are diverse and include having blood drawn, straining while urinating (micturition syncope) or defecating or coughing or swallowing). The reaction also can be due to the emotional stress of fear or pain. Under these conditions, people often become pale and feel nauseated, sweaty, and weak just before they lose consciousness. Situational syncope is caused by a reflex of the involuntary nervous system called the vasovagal reaction. The vasovagal reaction leads the heart to slow down (bradycardia) and, at the same time, it leads the nerves to the blood vessels in the legs to permit those vessels to dilate (widen). The result is that the heart puts out less blood, the blood pressure drops, and what blood is circulating tends to go into the legs rather than to the head. The brain is then deprived of oxygen, and the fainting episode occurs. The vasovagal reaction is also called a vasovagal attack. And situational syncope is also called vasovagal syncope, vasodepressor syncope, and Gower syndrome after Sir William Richard Gower (1845-1915), a famous English neurologist whose name is also associated with a sign, a solution, another syndrome, and a tract in the central nervous system.

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brief syncope that occurs during or immediately after micturition, usually associated with rising from bed at night to urinate; it may be a form of orthostatic hypotension.

Medical dictionary. 2011.

Look at other dictionaries:

  • Micturition syncope — or post micturition syncope is the name given to the human phenomenon of fainting shortly after or during urination. People often become pale, nauseated, sweaty and weak before they lose consciousness. Sometimes even defecating, coughing or… …   Wikipedia

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  • Syncope (fainting) — Partial or complete loss of consciousness with interruption of awareness of oneself and ones surroundings. When the loss of consciousness is temporary and there is spontaneous recovery, it is referred to as syncope or, in nonmedical quarters,… …   Medical dictionary

  • Syncope, coughing — The temporary loss of consciousness upon coughing. Syncope is the temporary loss of consciousness or, in plain English, fainting. The situations that trigger this reaction are diverse and include having blood drawn, straining while urinating… …   Medical dictionary

  • Syncope, defecation — The temporary loss of consciousness upon defecating (having a bowel movement). Syncope is the temporary loss of consciousness or, in plain English, fainting. The situations that trigger this reaction are diverse and include having blood drawn,… …   Medical dictionary

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  • syncope — Loss of consciousness and postural tone caused by diminished cerebral blood flow. [G. synkope, a cutting short, a swoon] Adams Stokes s. s. due to complete AV block. SYN: Morgagni Adams Stokes s.. cardiac s. fainting with unconsciousness of any …   Medical dictionary

  • Coughing syncope — The temporary loss of consciousness upon coughing. Syncope is the temporary loss of consciousness or, in plain English, fainting. The situations that trigger this reaction are diverse and include having blood drawn, straining while urinating… …   Medical dictionary

  • Defecation syncope — The temporary loss of consciousness upon defecating (having a bowel movement). Syncope is the temporary loss of consciousness or, in plain English, fainting. The situations that trigger this reaction are diverse and include having blood drawn,… …   Medical dictionary

  • Post-micturition convulsion syndrome — Post micturition convulsion syndrome, also colloquially known as piss shivers or pee shivers is a phenomenon in which one feels a shiver running down the spine following urination.cite news url = http://www.straightdope.com/classics/a4 225.html… …   Wikipedia

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