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Related Experiment Videos

Visual system side effects caused by parasympathetic dysfunction after botulinum toxin type B injections.

Jordan Dubow1, Angela Kim, Jerrold Leikin

  • 1Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60025, USA.

Movement Disorders : Official Journal of the Movement Disorder Society
|April 5, 2005
PubMed
Summary

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Botulinum toxin type B (BTX-B) injections may cause rare visual disturbances. This study details three patients experiencing parasympathetic visual system dysfunction after remote BTX-B treatments.

Area of Science:

  • Neurology
  • Ophthalmology

Background:

  • Botulinum toxin type B (BTX-B) is FDA-approved for cervical dystonia.
  • BTX-B is used off-label for hyperhidrosis, focal dystonias, spasticity, and wrinkles.
  • It serves as an alternative for patients resistant to BTX-A.

Observation:

  • Common BTX-B side effects include dry mouth and dysphagia.
  • Visual disturbances are infrequently reported with BTX-B.
  • This study presents three cases of visual system parasympathetic dysfunction.

Findings:

  • Patients developed parasympathetic dysfunction of the visual system.
  • Dysfunction occurred after BTX-B injections at remote sites.
  • This suggests a potential, albeit rare, adverse effect of BTX-B.

Related Experiment Videos

Implications:

  • Highlights the importance of monitoring for visual side effects with BTX-B.
  • Informs clinicians about potential rare complications beyond common side effects.
  • Contributes to understanding the systemic effects of botulinum toxin injections.