pain, unpleasant or hurtful sensation resulting from stimulation of nerve endings. The stimulus is carried by nerve fibres to the spinal cord and then to the brain, where the nerve impulse is interpreted as pain. The excessive stimulation of nerve endings during pain is attributed to tissue damage, and in this sense pain has protective value, serving as a danger signal of disease and often facilitating diagnosis. Unlike other sensory experiences, e.g., response to touch or cold, pain may be modified by sedatives and nonsteroidal anti-inflammatory drug analgesics or, if unusually severe, by opioid narcotics. If sedatives do not suffice and if the cause of the pain cannot be removed or treated, severing a nerve in the pain pathway may bring relief.
Pain is occasionally felt not only at the site of stimulation but in other parts of the body supplied by nerves in the same sensory path; for example, the pain of angina pectoris or coronary thrombosis may extend to the left arm. This phenomenon is known as referred pain. Subjective or hysterical pain originates in the sensory centres of the brain without stimulation of the nerves at the site of the pain.
Progress has been made in the management of chronic pain and in the education of patients and physicians in such techniques as biofeedback, acupuncture, and meditation and the appropriate use of narcotics and other medications. Using advanced medical imaging technology, researchers have now located multiple pain centres in the cerebral cortex of the brain, offering promise of possible improvements in measuring and managing pain.
Roget's Thesaurus: Entry 378 (Physical Pain)
#378. Physical Pain. -- N. pain; suffering, sufferance,
suffrance[obs]; bodily pain, physical pain, bodily suffering, physical
suffering, body pain; mental suffering &c. 828; dolour, ache; aching &c.
v.; smart; shoot, shooting; twinge, twitch, gripe, headache, stomach ache,
heartburn, angina, angina pectoris[Lat]; hurt, cut; sore, soreness;
discomfort, malaise; cephalalgia[Med], earache, gout, ischiagra[obs],
lumbago, neuralgia, odontalgia[obs], otalgia[obs], podagra[obs],
rheumatism, sciatica; tic douloureux[Fr], toothache, tormina[obs],
torticollis[obs].
spasm, cramp; nightmare, ephialtes[obs]; crick, stitch; thrill,
convulsion, throe; throb &c. (agitation) 315; pang; colic; kink.
sharp pain, piercing pain, throbbing pain, shooting pain, sting,
gnawing pain, burning pain; excruciating pain.
anguish, agony; torment, torture; rack; cruciation[obs], crucifixion;
martyrdom, toad under a harrow, vivisection.
V. feel pain, experience pain, suffer pain, undergo pain &c. n.;
suffer, ache, smart, bleed; tingle, shoot; twinge, twitch, lancinate[obs];
writhe, wince, make a wry face; sit on thorns, sit on pins and needles.
give pain, inflict pain; lacerate; pain, hurt, chafe, sting, bite,
gnaw, gripe; pinch, tweak; grate, gall, fret, prick, pierce, wring,
convulse; torment, torture; rack, agonize; crucify; cruciate[obs],
excruciate|; break on the wheel, put to the rack; flog &c. (punish) 972;
grate on the ear &c. (harsh sound) 410.
Adj. in pain &c. n., in a state of pain; pained &c. v.; gouty,
podagric[obs], torminous[obs].
painful; aching &c. v.; sore, raw.
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