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[Abnormal head drooping in facioscapulohumeral muscular dystrophy]
Y Ichikawa1, H Yamada, Y Motoyoshi
1Department of Neurology, National Shimoshizu Hospital, Chiba, Japan.
Rinsho Shinkeigaku = Clinical Neurology
|March 1, 1996
Summary
Facioscapulohumeral muscular dystrophy (FSHD) can present with severe neck muscle weakness causing head drooping, even before gait issues appear. This highlights the varied clinical presentation of this genetic muscle disorder.
Area of Science:
- Neurology
- Genetics
- Clinical Medicine
Background:
- Facioscapulohumeral muscular dystrophy (FSHD) is a genetic disorder characterized by progressive muscle wasting.
- Diagnosis typically relies on a distinct pattern of muscle weakness, often starting in the shoulder girdle and face.
- Significant variability in presentation and severity exists among affected individuals, leading to proposed clinical subtypes.
Observation:
- Three patients with FSHD presented with pronounced head drooping.
- This head drooping was attributed to severe wasting of the posterior neck muscles.
- The abnormal neck posture was noticed by patients earlier than significant gait impairment.
Findings:
- The observed head drooping represents a novel clinical manifestation of FSHD.
- This symptom appeared before other characteristic FSHD features, such as gait disability, became apparent.
- Familial cases showed that not all affected members exhibited this specific sign, underscoring clinical heterogeneity.
Implications:
- The findings expand the understanding of FSHD's clinical spectrum.
- Head drooping due to posterior neck muscle weakness should be considered in FSHD diagnosis.
- Recognizing this sign aids in earlier identification and management of FSHD patients, highlighting genetic disorder heterogeneity.