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Stridor in multiple system atrophy

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Stridor in multiple system atrophy

This video-PSG of a patient with multiple system atrophy exhibits a harsh high-pitch sound during NREM sleep. Note the tonic activity of intercostalis muscles also during expiration. (Contributed by Dr. Federica Provini.)

Related Media

Associated Disorders

  • Multiple system atrophy
  • Nocturnal asthma
  • Nocturnal panic attacks
  • Obstructive sleep apnea
  • Parasomnias (eg, catathrenia)
  • Primary snoring
  • Sleep-related choking syndrome
  • Sleep-related gastroesophageal reflux
  • Vocal cord dysfunction