A case of linear scleroderma involving cerebellum with vertigo.

Linear scleroderma is a kind of disease that can cause complication of the central nervous system. Sometimes, ipsilateral intracerebral or white matter lesions in the brain magnetic resonance imaging are noted. Nystagmus is important for the differential diagnosis of dizziness. Positional nystagmus was classified into regular direction nystagmus, direction changing positional nystagmus (DCPN) and irregular nystagmus by their character. DCPN is defined as a nystagmus that changes its direction with different head and body positions, and it can be the sign of lesion in the central vestibular system. Recently, we experienced a 17-year-old woman who had a scalp linear scleroderma, treated for about 10 years and showed DCPN induced by positional nystagmus test. We report a case of linear scleroderma accompanied by cerebellar lesion with a brief review of literature.