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Hyperalgesia (/ ˌ h aɪ p ər æ l ˈ dʒ iː z i ə / or /-s i ə /; hyper from Greek ὑπέρ (huper) 'over' + -algesia from Greek ἄλγος (algos) 'pain') is an abnormally increased sensitivity to pain, which may be caused by damage to nociceptors or peripheral nerves and can cause hypersensitivity to stimulus.
But this religious conception did not prevent Early Modern Physicians from being concerned by the problem of pain: [5] they tried to cure it with pain-killers called "anodynes", they discussed the problem of the phantom-pain, described in the 16th century by the surgeon Ambroise Paré; and they proposed rich descriptions of the signs of pain. [6]
' pain receptor ') is a sensory neuron that responds to damaging or potentially damaging stimuli by sending "possible threat" signals [1] [2] [3] to the spinal cord and the brain. The brain creates the sensation of pain to direct attention to the body part, so the threat can be mitigated; this process is called nociception .
The intensity of pain reported is consistently reduced in response to touch. [5] [6] [7] This occurs whether the touch is at the same time as the pain, or even if the touch occurs before the pain. [8] Touch also reduces the activation of cortical areas that respond to painful stimuli. [9]
A dolorimeter is an instrument used to measure pain threshold and pain tolerance. Dolorimetry has been defined as "the measurement of pain sensitivity or pain intensity". [ 1 ] Dolorimeters apply steady pressure, heat, or electrical stimulation to some area, or move a joint or other body part and determine what level of heat or pressure or ...
Pain tolerance is the maximum level of pain that a person is able to tolerate. Pain tolerance is distinct from pain threshold (the point at which pain begins to be felt). [1] The perception of pain that goes in to pain tolerance has two major components. First is the biological component—the headache or skin prickling that activates pain ...
Most pain resolves once the noxious stimulus is removed and the body has healed, but it may persist despite removal of the stimulus and apparent healing of the body. Sometimes pain arises in the absence of any detectable stimulus, damage or disease. [3] Pain is the most common reason for physician consultation in most developed countries.
Hypoalgesia or hypalgesia denotes a decreased sensitivity to painful stimuli. Hypoalgesia occurs when nociceptive (painful) stimuli are interrupted or decreased somewhere along the path between the input (nociceptors), and the places where they are processed and recognized as pain in the conscious mind. Hypoalgesic effects can be mild, such as ...