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Related Experiment Videos

Pseudobulbar palsy associated with trismus

M M Lai1, R S Howard

  • 1Department of Neurology, Guy's and St Thomas' Hospital Trust, London, UK.

Postgraduate Medical Journal
|November 1, 1994
PubMed
Summary
This summary is machine-generated.

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Trismus, a rare symptom of jaw stiffness, was the initial sign of acute pseudobulbar palsy in a 60-year-old patient. This condition, often linked to brainstem or cranial nerve issues, was diagnosed via CT scan showing bilateral internal capsule infarcts.

Area of Science:

  • Neurology
  • Neuroimaging
  • Cerebrovascular Disease

Background:

  • Pseudobulbar palsy (PBP) is a neurological disorder characterized by emotional dysregulation and motor deficits.
  • It typically results from damage to the brain's white matter tracts connecting the cerebral cortex to the brainstem and cerebellum.
  • Common causes include stroke, traumatic brain injury, and neurodegenerative diseases.

Observation:

  • A 60-year-old patient presented with acute symptoms.
  • Key presenting features included trismus (difficulty opening the jaw) and signs of pseudobulbar palsy.
  • No prior reports linked trismus as a presenting symptom of PBP.

Findings:

  • Computed tomography (CT) scans revealed bilateral low-attenuation areas.
  • These infarcts were specifically located in the genu of the internal capsules.

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  • The imaging findings correlated with the clinical presentation of PBP and trismus.

    • Implications:

    • This case highlights trismus as a potential, previously undescribed, presenting symptom of acute pseudobulbar palsy.
    • Neuroimaging, particularly CT, is crucial for identifying the underlying infarcts in the internal capsules.
    • Understanding this association may improve early diagnosis and management of PBP, especially in cases with atypical initial symptoms.