疼痛概述(An overview of the pain).doc
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疼痛概述(An overview of the pain)
Cao weihua, affiliated hospital of weifang medical college
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Pain is a precursor to many illnesses and is a common cause of patient visits. Through the courseware learning, students can master the headache, chest pain, abdominal pain the etiology and clinical manifestations of three kinds of pain, familiar with their accompanying symptoms, understand their pathogenesis and main points of the interrogation.
1. Overview of pain
(1) concept
Pain is a very common symptom, and pain is a precursor to many illnesses and is a common cause of patient visits. Pain is a warning sign that causes the body to avoid or remove the causes of pain, which can have a protective effect or persistent pain that can cause physical dysfunction and even shock.
(ii) mechanism of occurrence
The occurrence mechanism of pain has painful substance, body, viscera, trachea, esophagus, head face. The irritants that cause pain are called pain-causing substances, such as acetylcholine, serotonin, histamine, bradykinin, potassium, hydrogen, and tissue damage.
The occurrence of somatic pain is the peripheral nerve endings - spinal cord nerve - the spinal cord of the thalamus, the medial sac - the first sensory area of the cerebral cortex - causing the sensation of localized pain. Visceral pain occurs through sympathetic nerves that pass through the posterior root into the spinal cord. Trachea and esophagus are uploaded by vagus nerve stem afferent fiber. The head is passed through the trigeminal nerve.
(3) classification
There are three main types of pain: headache, chest pain and abdominal pain.
Is the degree of headache parallel to the severity of the disease? What are the factors that aggravate, mitigate, or trigger headaches?
Second, have a headache
(1) overview
Headache is refers to the frontal, top, temporal and occipital pain, many diseases can have headache symptom, there is no special meaning, but most recurrent, persistent or progressive increase
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