Nemaline Myopathy Definition

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Nemaline Myopathy: A group of inherited congenital myopathic conditions characterized clinically by weakness, hypotonia, and prominent hypoplasia of proximal muscles including the face. Muscle biopsy reveals large numbers of rod-shaped structures beneath the muscle fiber plasma membrane. This disorder is genetically heterogeneous and may occasionally present in adults. (Adams et al., Principles of Neurology, 6th ed, p1453)

Synonym: autosomal recessive nemaline myopathy, autosomal dominant nemaline myopathy, adult onset nemaline myopathy, late onset nemaline myopathy, childhood onset nemaline myopathy, rod-body myopathy, rod myopathy.

Additional tags: nemaline myopathy definition