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Journal of Otology & RhinologyISSN: 2324-8785

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Case Report, J Otol Rhinol Vol: 3 Issue: 5

A 7-Year-Old Boy with Light Cupula of the Horizontal Semicircular Canal

Hiroaki Ichijo*
Ichijo Ear, Nose and Throat Clinic, Hirosaki, Japan
Corresponding author : Hiroaki Ichijo
Ichijo Ear, Nose and Throat Clinic, 3-2-1, Ekimae, Hirosaki, 036-8002, Japan
Tel: +81 172 28 9568; Fax: +81 172 28 9568;
E-mail: [email protected]
Received: June 24, 2014 Accepted: September 03, 2014 Published: September 05, 2014
Citation: Ichijo H (2014) A 7-Year-Old Boy with Light Cupula of the Horizontal Semicircular Canal. J Otol Rhinol 3:5. doi:10.4172/2324-8785.1000185

Abstract

A 7-Year-Old Boy with Light Cupula of the Horizontal Semicircular Canal

Report of childhood positional vertigo is very rare. We present a 7-year-old boy who revealed persistent direction-changing geotropic positional nystagmus. In the supine position, horizontal nystagmus toward the left continued as long as the position was maintained. However, it ceased when the head was turned to the right side by 45º. With greater head turn (right-ear-down), nystagmus toward the right lasted for more than 1 minute. In the left-ear-down position, horizontal nystagmus toward the left occurred and lasted for more than 1 minute. After the disappearance of positional nystagmus, we detected canal paresis of the right ear by caloric test. We considered that the pathophysiology of the persistent type of geotropic nystagmus is a result of light debris cupulolithiasis of the horizontal canal.

Keywords: Cupula; Horizontal semicircular canal; Positional nystagmus; Vertigo

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