Dermatomyositis

A subacute or chronic inflammatory disease of muscle and skin, marked by proximal muscle weakness and a characteristic skin rash. The illness occurs with approximately equal frequency in children and adults. The skin lesions usually take the form of a purplish rash (or less often an exfoliative dermatitis) involving the nose, cheeks, forehead, upper trunk, and arms. The disease is associated with a complement mediated intramuscular microangiopathy, leading to loss of capillaries, muscle ischemia, muscle-fiber necrosis, and perifascicular atrophy. The childhood form of this disease tends to evolve into a systemic vasculitis. Dermatomyositis may occur in association with malignant neoplasms. (From Adams et al., Principles of Neurology, 6th ed, pp1405-6) (NLM, Medical Subject Headings)

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A visual representation of the bands of skin innervated by the sensory nerves used for assessment.

Dermatome

The area of skin innervated by a single posterior spinal nerve (sensory nerve).

Dermatology

A medical specialty concerned with the skin, its structure, functions, diseases, and treatment.

Dermatologist

A doctor who has special training to diagnose and treat skin problems.

Dermatologic Oncology

The branch of oncology concerned with the study, diagnosis, and treatment of skin cancer.

Dermatologic

Having to do with the skin, relating to or practicing dermatology.