Visceral pain

Introduction Visceral pain is a common clinical symptom, often caused by mechanical traction, spasm, ischemia and inflammation. Its characteristics are as follows: inaccurate positioning, which is the most important feature of visceral pain, such as patients with abdominal pain often can not tell the clear location of the pain, because the distribution of pain receptors in the internal organs is much thinner than in the body, and the transmission of internal organs The entry route is more dispersed. It occurs slowly and lasts for a long time, which is mainly characterized by slow pain, often progressively increased, but sometimes it can quickly turn into severe pain.

Cause

The mechanism is still unclear, mainly caused by internal organ disorders, including dilatation, ischemia, inflammation, and traction of the mesentery.

an examination

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Visceral pain is mainly caused by internal organ disorders, including dilatation, ischemia, inflammation, and traction of the mesentery. Patients often show symptoms such as nausea, fever, discomfort and pain. There are five clinical features of visceral pain: First, not all internal organs can produce pain because of the uneven distribution of receptors or the lack of appropriate noxious stimulation. Second, visceral pain is not always associated with injury, ie visceral pain has non-structural, non-functionally dependent properties. Third, because the afferent nerves of the internal organs and the body have a convergence in the center, visceral pain often involves the body wall. Fourth, it may be related to the distribution of afferent nerves. Visceral pain is rarely confined to a certain part and is diffuse. Fifth, visceral pain is often accompanied by significant movement and autonomic reflex activity, which is likely to be a stress response of the body to the outside world.

Differential diagnosis

Visceral pain needs to be identified as follows.

1 True visceral pain is the pain that occurs when the internal organs themselves are stimulated. It is a dull pain, soreness or burning pain, and it can also be colic. It is caused by the expansion, sputum or strong contraction of the hollow organ, the stimulation of the chemical substance, and the pulling of the organ. Its characteristics are: (1) visceral pain is located inside the body, occurs slowly, but lasts longer; (2) lacks double pain; (3) unclear positioning, the edge of the pain zone is not easy to determine.

2 Body cavity wall pain, also known as visceral pain, is caused by the stimulation of the wall layer of the body cavity, such as inflammation caused by inflammation, pressure, friction or surgery in the pleura and peritoneum. A further feature of this type of pain is the presence of pain or hyperalgesia in the skin of the corresponding spinal nerve segment.

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