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Some referred pain due to visceral sensations refer to dermatomes that send fibers to the same level of spinal cord. A dermatome is an area of skin supplied by sensory neurons that arise from a spinal nerve ganglion. Symptoms that follow a dermatome (e.g. like pain or a rash) may indicate a pathology that involves the related nerve root ...
Dermatomes are similar; however, a dermatome only specifies the area served by a spinal nerve. In some cases, the dermatome is less specific (when a spinal nerve is the source for more than one cutaneous nerve), and in other cases it is more specific (when a cutaneous nerve is derived from multiple spinal nerves.) [1]
Referred pain, also called reflective pain, [1] is pain perceived at a location other than the site of the painful stimulus.An example is the case of angina pectoris brought on by a myocardial infarction (heart attack), where pain is often felt in the left side of neck, left shoulder, and back rather than in the thorax (chest), the site of the injury.
Radicular pain, or radiculitis (from the Latin: radicula, lit. 'small root'), is pain "radiated" along the dermatome (sensory distribution) of a nerve due to inflammation or other irritation of the nerve root ( radiculopathy ) at its connection to the spinal column . [ 1 ]
Dermatome may refer to: Dermatome (anatomy) , an area of skin that is supplied by a single pair of dorsal roots Dermatome (embryology) , the portion of the embryonic paraxial mesoderm, the somite, which gives rise to dermis
In human anatomy, cutaneous nerves are primarily responsible for providing cutaneous innervation, sensory innervation to the skin.In addition to sympathetic and autonomic afferent (sensory) fibers, most cutaneous nerves also contain sympathetic efferent (visceromotor) fibers, which innervate cutaneous blood vessels, sweat glands, and the arrector pilli muscles of hair follicles. [1]
Pain typically occurs in the distribution of a dermatome and goes below the knee to the foot. [ 4 ] [ 6 ] It may be associated with neurological dysfunction, such as weakness and numbness. [ 4 ]
The affected posterior ramus ends cutaneously causing trophic changes of the skin referred to as cellulalgia. Neuropathic pain is found in three well described regions and serves as the principal clinical component in diagnosing Lumbar Dorsal Ramus Syndrome (LDRS).