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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, cheeks or ears, and generally assumed to reflect emotional stress, such as embarrassment, anger, or romantic stimulation. 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== * fever * alcohol flush reaction * an abrupt cessation of physical exertion (resulting in heart output in excess of current muscular need for blood flow) * emotions: anger, embarrassment (for this reason it is also called ''erythema pudoris'', from the Latinized Greek word for "redness" and the Latin "of embarrassment") * sexual arousal, especially orgasm, (see section to follow) * inflammation (for example, caused by allergic reaction or infection) * high doses of non flush free niacin (vitamin B3) * caffeine consumption * coughing, particularly severe coughing fits * sneezing * cluster headache attack or headache * severe pain * hot flush * hyperthyroidism * Cushing's Syndrome * Sexual intercourse (see below) * some recreational drugs, such as alcohol, heroin, cocaine and amphetamines * carcinoid tumor * Medullary thyroid cancer * pheochromocytoma * mastocytosis * chronic obstructive pulmonary disease, especially emphysema (also known as "pink puffer") * mixing an antibiotic with alcohol * rosacea * tachycardia *hyperglycaemia * histamines * spicy foods * Powerful vasodilators, such as dihydropyridine calcium channel blockers * Jarisch-Herxheimer reaction (caused by antibiotics) * iron poisoning * atropine poisoning * keratosis pilaris rubra faceii * carbon monoxide poisoning * antiestrogens such as Tamoxifen * hyperstimulation of the parasympathetic nervous system, especially the vagus nerve * ACNES Abdominal Cutaneous Nerve Entrapment Syndrome, usually in patients who have had abdominal surgery * compression of the nerve by the sixth thoracic vertebrae * butorphanol reaction with some narcotic analgesics (since butorphanol is also an antagonist) * sunburn (erythema) * polycythemia vera * vinpocetine * body contact with warm or hot water (hot tub, bath, shower) * dehydration * fibromyalgia * homocystinuria (flushing across the cheeks) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Flushing (physiology)」の詳細全文を読む スポンサード リンク
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