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Supranuclear gaze palsy and hummingbird sign
  1. Mohammad Rohani,
  2. Mostafa Almasi
  1. Neurology Department, Rasoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran
  1. Correspondence to Dr Mostafa Almasi, Neurology Department, Rasoul Akram Hospital, Niayesh St, Sattar-Khan St, Tehran 1445613131, Iran; A_mostafa108{at}

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Progressive supranuclear palsy (PSP) is a neurodegenerative disease caused by tau protein accumulation. It is also classified as an atypical parkinsonian syndrome. The main features of PSP are recurrent falling and vertical gaze palsy. Other manifestations are bradykinesia, cognitive dysfunction, erect posture, dysphagia and …

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  • Contributors Both authors contributed to this manuscript. MR is the first author and MA is the corresponding author. They are neurologists, and both contributed in the diagnosis of the disease and in writing the manuscript.

  • Competing interests None declared.

  • Patient consent Obtained.

  • Provenance and peer review Not commissioned; externally peer reviewed.