Systemic Flushing

Flushing usually occurs when the body becomes fatigued and/or stressed which stimulates the sympathetic nervous system. The key to this is the autonomic nervous system (more specifically, the sympathetic postganglionic efferent nerves). Any activation of these nerves causes vasoconstriction of body blood vessels -- except in the facial blush/flush areas where it induces potent vasodilatation or flushing with the resulting acne flush.

The body does operate on a clock! Universally, hospital physicians have known for years that the lowest body temperature of the 24 hour day is usually around 3:00 to 4:00 A.M. while the highest temperature of the day is generally 7:00 to 8:00 P.M. The average acne patient does not have hospital waking and sleeping hours, therefore their temperature lows and highs may vary 3 to 5 hours each way. A high temperature for some may be as early as 3:00 P.M.

Flushing usually occurs when the body becomes fatigued and/or stressed which stimulates the sympathetic nervous system. The key to this is the autonomic nervous system (more specifically, the sympathetic postganglionic efferent nerves). Any activation of these nerves causes vasoconstriction of "body blood vessels" -- except in the "facial blush/flush areas" where it induces potent vasodilatation or flushing with the resulting "acne flush".

Stress stimulates the sympathetic nervous system.
Lack of sleep stimulates the sympathetic nervous system with a minimum of 8 to 9 hours being needed nightly.
Anxiety (fight or flight) stimulates the sympathetic nervous system.
Increase in internal body temperature which stimulates the sympathetic nervous system, whereas obviously a decrease in body temperature decreases the sympathetic system due to the parasympathetic system calming the system.

The sympathetic nervous system is especially important to acne patients who tend to have one or more of the following:

Genetically weak blood vessels
Damaged blood vessels from years of sun, or aggressive exfoliants
Damaged support system for blood vessels (collagen-elastic of skin)
Increased number of blood vessels

Back to Acne Flushing: Types, Patterns, and Systems

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This page last updated: February 3, 2012