Pendular nystagmus in progressive ataxia and palatal tremor
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Pendular nystagmus (PN) is an involuntary ocular oscillation that can be found in congenital or acquired visual or central nervous system diseases [1, 2]. We describe the case of a patient with PN associated with progressive cerebellar ataxia and palatal tremor (PAPT). The PN has been registered and analyzed with video-oculography.
KeywordsSpinocerebellar Ataxia Inferior Olive Superior Cerebellar Peduncle Friedreich Ataxia Progressive Ataxia
The authors thank Dr. Erik Ulmer for his technical advice and the patient for his willing collaboration and sympathy.
Conflict of interest
Video 1 The video demonstrates the presence of marked disequilibrium both in the static tests as the Single Leg Stance and in the dynamic tests as in Tandem Walking. (MPG 13090 kb)
Video 2 The video presents the principal cerebellar coordination tests to the superior and inferior limbs. The coordination tests are basically unimpaired in this patient. (MPG 4130 kb)
Video 3 The ocular oscillations are barely recognizable at clinical examination (part 1), while the nystagmus is clearly demonstrated through the infrared video-oculography. The nystagmus develops preferentially in the vertical plane. A secondary rotational counter-clockwise component can be identified (part 2). The palatal tremor is symmetrical, although it is occasionally lateralized to the left side (part 3). (MPG 3510 kb)
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