[Diagnostic image (53). Facioscapulohumeral muscle dystrophy]

Area of Science:

• Neurology
• Genetics
• Musculoskeletal Disorders

Background:

• Facioscapulohumeral muscular dystrophy (FSHD) is an autosomal dominant inherited disorder.
• It is characterized by progressive skeletal muscle weakness and atrophy, typically affecting the face, shoulders, and upper arms.
• Diagnosis often relies on clinical presentation, family history, and genetic testing.

Observation:

• A 39-year-old male presented with symptoms consistent with muscular dystrophy.
• Clinical examination revealed facial muscle weakness, scapular winging, and upper limb muscle atrophy.
• The patient's medical history and physical findings prompted further investigation for FSHD.

Findings:

• Diagnostic workup confirmed the patient's diagnosis of facioscapulohumeral muscular dystrophy.
• Genetic analysis identified the characteristic epigenetic changes associated with FSHD, specifically related to the DUX4 gene.
• The patient's presentation aligns with the typical phenotype of FSHD.

Implications:

• Early and accurate diagnosis of FSHD is crucial for patient management and genetic counseling.
• Understanding the genetic basis of FSHD aids in developing targeted therapies.
• This case highlights the importance of recognizing FSHD in adult patients presenting with progressive muscle weakness.