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Chronic pain is also described as the pain experienced when the child reports a headache, abdominal pain, back pain, generalized pain, or a combination of these. Chronic pain can develop from disease or injury and co-occur with acute pain. Children who experience chronic pain can have psychological effects.
Chronic pain in children has far-reaching effects on their well-being, impacting both the children and their families. These children often suffer from additional symptoms caused by the pain such as difficulty in social participation, learning difficulties and a general decrease in quality of life.
The International Association for the Study of Pain (IASP) defines chronic pain as a general pain without biological value that sometimes continues even after the healing of the affected area; [8] [9] a type of pain that cannot be classified as acute pain [b] and lasts longer than expected to heal, or typically, pain that has been experienced on most days or daily for the past six months, is ...
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 ...
The brain produces roughly 500 mL of cerebrospinal fluid per day at a rate of about 20 mL an hour. [18] This transcellular fluid is constantly reabsorbed, so that only 125–150 mL is present at any one time. [1] CSF volume is higher on a mL per kg body weight basis in children compared to adults.
Neuropathic pain has profound physiological effects on the brain which can manifest as psychological disorders. Rodent models where the social effects of chronic pain can be isolated from other factors suggest that induction of chronic pain can cause anxio-depressive symptoms and that particular circuits in the brain have a direct connection.
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The brain determines which stimuli are profitable to ignore over time. Thus, the brain controls the perception of pain quite directly, and can be "trained" to turn off forms of pain that are not "useful". This understanding led Melzack to assert that pain is in the brain. [citation needed]