Exempel på dermatome

• The eruption may involve more than one dermatome but rarely crosses the midline.

• A prodrome of intense pain with pruritus, tingling, tenderness and hyperaesthesia occurs, followed by a painful eruption of grouped vesicles on an erythematous base within a sensory dermatome.

• Generally the lesions of zoster are unilateral and located at the site most severely affected by varicella, most commonly either the facial or the mid-thoracic to upper lumbar dermatomes.

• Referred pain usually involves a specific, referred location so is not associated with a dermatome.

• The somites give rise to the vertebral column (sclerotome), associated muscles (myotome), and overlying dermis (dermatome).

• Because the sclerotome differentiates before the dermatome and the myotome, the term "dermomyotome" refers to the combined dermatome and myotome before they too separate out.

• Each somite has 3 divisions, sclerotome (which forms vertebrae), dermatome (which forms skin), and myotome (which forms muscle).

• Somites give rise to the myotome (muscle tissue), sclerotome (cartilage and bone), and dermatome (subcutaneous tissue of the skin).

• The onion skin distribution is entirely different from the dermatome distribution of the peripheral branches of the fifth nerve.

• Dermatomes are similar; however, a dermatome only specifies the area served by a spinal nerve.

• It is formed when a dermamyotome (the remaining part of the somite left when the sclerotome migrates), splits to form the dermatome and the myotome.

• This overlap of innervation is poorly handled by the standard dermatome map which physicians rely on to trace pain back to its source.

• Pain typically occurs in the distribution of a dermatome and goes below the knee to the foot.