Facioscapulohumeral muscular dystrophy

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Facioscapulohumeral Muscular Dystrophy[edit | edit source]

Facioscapulohumeral muscular dystrophy (FSHD) is a genetic muscle disorder characterized by progressive skeletal muscle weakness. It primarily affects the muscles of the face, shoulder blades, and upper arms.

Signs and Symptoms[edit | edit source]

FSHD symptoms typically begin in adolescence or early adulthood. Common signs include:

Genetics[edit | edit source]

FSHD is usually inherited in an autosomal dominant pattern. It is associated with a genetic mutation on chromosome 4, specifically a contraction of the D4Z4 repeat region. There are two main types of FSHD:

  • FSHD1: Caused by a contraction of the D4Z4 repeat on chromosome 4q35.
  • FSHD2: Involves mutations in the SMCHD1 gene, which affects the same region.

Diagnosis[edit | edit source]

Diagnosis of FSHD is based on clinical evaluation, family history, and genetic testing. Electromyography (EMG) and muscle biopsy may also be used to assess muscle function and structure.

Management[edit | edit source]

There is currently no cure for FSHD, but management focuses on maintaining muscle function and quality of life. Treatment options include:

Research[edit | edit source]

Ongoing research aims to better understand the genetic mechanisms of FSHD and develop targeted therapies. Clinical trials are exploring potential treatments, including gene therapy and myostatin inhibitors.

See Also[edit | edit source]

References[edit | edit source]


External Links[edit | edit source]


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