Dermatomyositis other diagnostic studies
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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Overview
A muscle biopsy in dermatomyositis shows inflammatory cells that are surrounding and damaging blood vessels in the muscle. A skin biopsy is done to identify dermatomyositis as well as to rule out systemic lupus erythematosus.
Other Diagnostic Studies
- Electromyography: During this procedure, the doctor inserts a thin needle electrode into the muscle and measure electrical activities when the patient relaxes or tightens the muscle. The doctor can identify a muscle disease by analyzing these electrical activities.
- Muscle biopsy: During this procedure, the doctor removes a small piece of muscle tissue surgically and detects in the pathological lab. Under microscope, tissues of patients with dermatomyositis may demonstrate that inflammatory cells surround and damage the capillary blood vessels in the muscle.
- Skin biopsy: The goal of skin biopsy is to identify the diagnosis of dermatomyositis and rule out other disease such as systemic lupus erythematosus. During this procedure, the doctor removes a small piece of skin tissue surgically and detects in the pathological lab.