Flushing (physiology)
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For a person to flush is to become markedly red in the face and often other areas of the skin, from various physiological conditions. Flushing is generally distinguished, despite a close physiological relation between them, from blushing, which is milder, generally restricted to the face or cheeks, and generally assumed to reflect embarrassment. Flushing and blushing can lead to rosacea. Flushing is also a cardinal symptom of carcinoid syndrome – the syndrome that results from hormones (often serotonin or histamine) being secreted into systemic circulation.
Causes of flushing
- sexual arousal (see section to follow)
- emotions: anger, embarrassment
- an abrupt cessation of physical exertion (resulting in heart output in excess of current muscular need for blood flow)
- physiological response to vasodilators, for instance, a recent high dose of niacin, nitroglycerine, calcium channel blockers, or any drug that causes release of adrenal hormones that raise blood pressure such as stimulants
- post-menopausal decrease in estrogen production
- anaphylaxis
- neuroendocrine tumors: carcinoid syndrome, pheochromocytoma, VIPoma, thyroid medullary carcinoma
- mast cell tumor: mastocytosis
- Niacin
- Various psychedelics or other drugs, such as 3-Quiniclidinyl Benzilate(BZ) or Alcohol
- redirect
Sex flush
During the female sex flush, pinkish spots develop under the breasts, then spread to the breasts, torso, face, hands, soles of the feet, and possibly over the entire body. Vasocongestion is also responsible for the darkening of the clitoris and the walls of the vagina during sexual arousal. During the male sex flush, the coloration of the skin develops less consistently than in the female, but typically starts with the epigastrium (upper abdomen), spreads across the chest, then continues to the neck, face, forehead, back, and sometimes, shoulders and forearms.
The sex flush typically disappears soon after orgasm occurs, but this may take up to two hours or so, and sometimes, intense sweating will occur simultaneously. The flush usually diminishes in reverse of which it appeared.
See also
External links
- [Flushing] by Chrisstian Nasr, MD
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