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Sep 10, 2023 · There are many different types of pain, each arising through unique mechanisms. Types of pain include: sharp, prickling, thermal, or aching pain. The origin of pain can be somatic, visceral, thalamic, neuropathic, psychosomatic, referred, or illusionary. Pain can also be acute or chronic in nature.
This article provides an overview of the physiological mechanisms of pain and the important pain pathways. We will discuss pain receptors, transmission of pain signals to the spinal cord and pain pathways within the spinal cord. We will also look at how pain can be modulated at different levels along the pathway.
Mar 13, 2019 · Pain pathways represent a complex sensory system, with cognitive, emotional, and behavioral elements having evolved to detect and integrate a protective response to noxious stimuli . In humans, this system involves both primitive spinal reflexes and complex conscious and subconscious supraspinal responses.
There are three types of pain classified by cause. The pain you feel when you stub your toe or put your hand on a hot pan is called nociceptive pain. A sensory neuron—or nociceptor—transmits an electrical impulse to the spinal cord and then to the brain, where it is experienced as pain.
May 29, 2024 · Pathophysiology. Transduction. Transmission. Modulation. Perception. Introduction. Pain Signaling. Nociceptive, neuropathic, and nociplastic pain comprise the three broad categories of pain, with mechanisms that overlap and remain incompletely understood (Table 2.1) [ 1, 2 ].
Introduction. Pain ranges in intensity, quality, and duration and has diverse pathophysiologic mechanisms. The perception of pain may reflect activation of nociceptors or their axons by either brief (e.g., pinprick) or lasting (e.g., inflammation) insults.
Feb 11, 2022 · First pain and second pain are transmitted to the brain separately, through spinothalamic tract, and spinoamygdalar/spinohypothalamic pathways, respectively. Descending pathways from brain to spinal cord modulate pain via inhibition or facilitation.
Jul 10, 2022 · Overview. Pain can be classified temporally (acute versus chronic) or based on the site of origin (visceral versus somatic). Acute pain, as the name suggests, occurs suddenly and usually follows very recent insult (iatrogenic trauma, myocardial infarction). Chronic pain has a more protracted course progressing over months to years.
Introduction. Pain is a vital function of the nervous system in providing the body with a warning of potential or actual injury. It is both a sensory and emotional experience, affected by psychological factors such as past experiences, beliefs about pain, fear or anxiety.
The ascending pathways that mediate pain consist of three different tracts: the neospinothalamic tract, the paleospinothalamic tract and the archispinothalamic tract. The first-order neurons are located in the dorsal root ganglion (DRG) for all three pathways.
