• abrupt cessation of physical
exertion (resulting in
heart output in excess of current
muscular need for
blood flow) •
abdominal cutaneous nerve entrapment syndrome (ACNES), usually in patients who have had
abdominal surgery •
alcohol flush reaction •
antiestrogens such as
tamoxifen •
atropine poisoning • body contact with warm or hot water (hot tub, bath, shower) •
butorphanol reaction with some
narcotic analgesics (since butorphanol is also an
antagonist) •
caffeine consumption •
carbon monoxide poisoning •
carcinoid tumor •
chronic obstructive pulmonary disease (COPD), especially
emphysema (also known as "pink puffer") •
cluster headache attack or
headache • compression of the nerve by the sixth
thoracic vertebrae •
coughing, particularly severe coughing fits •
Cushing's syndrome •
dehydration •
dysautonomia • emotions:
anger,
embarrassment (for this reason it is also called
erythema pudoris, from the Latinized Greek word for "redness" and the Latin "of
embarrassment") •
fever •
fibromyalgia •
histamines •
homocystinuria (flushing across the cheeks) •
Horner's syndrome •
hot flush •
hyperglycaemia • hyperstimulation of the
parasympathetic nervous system, especially the
vagus nerve •
hyperthyroidism •
inflammation (for example, caused by
allergic reaction or
infection) •
iron poisoning •
Jarisch–Herxheimer reaction (caused by antibiotics) •
keratosis pilaris rubra faceii •
Kratom •
mast cell activation syndrome (MCAS) •
mastocytosis •
medullary thyroid cancer • mixing an
antibiotic with
alcohol • neuroendocrine tumors •
niacin (
vitamin B3) •
pheochromocytoma •
polycythemia vera • powerful
vasodilators, such as
dihydropyridine calcium channel blockers • severe pain •
sexual arousal, especially
orgasm •
sexual intercourse •
sneezing (red nose) • some
recreational drugs, such as
alcohol,
heroin,
cocaine and
amphetamines • spicy foods •
sunburn (
erythema) •
tachycardia •
vinpocetine ==See also==