10 Dermatomyositis Symptoms
Reviewed: Dr. Gromatzky
Symptom #3: Muscle Weakness
Muscle weakness is a nonspecific symptom that is also known as myasthenia. Myasthenia can be either a true or perceived weakness. True muscle weakness occurs in skeletal muscle diseases, such as inflammatory myopathy and muscular dystrophy.
Perceived muscle weakness occurs when the individual feels that extra effort is required despite having normal muscle strength. In dermatomyositis, the muscle weakness occurs progressively in the proximal muscles, making it difficult to perform tasks, such as climbing stairs, standing up, and lifting.
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