Cerebellar Atrophy Associated with Primary Sjögren's Syndrome: Diagnosis, Therapy, and Virtual Reality Rehabilitation: A Case Report.

Cerebellar involvement in primary Sjögren's syndrome (pSS) is an uncommon condition, with only a limited number of cases described worldwide. A 43-year-old woman affected by cerebellar atrophy associated with pSS was referred to our center to undergo a cycle of physical rehabilitation therapy. Although motor symptoms started when the patient was 23 years of age, the underlying disease remained undiagnosed for several years. Neurological examination before rehabilitation revealed ataxic gait, dysmetria, nystagmus, and hypermetric saccades; the patients complained about unsteadiness while standing or walking. To improve balance and gait abilities, a 20-session cycle of balance rehabilitation, based on a combination of conventional physical therapy and virtual reality exergames, was prescribed. The outcomes of rehabilitation were evaluated with balance tests and three-dimensional (3D) gait analysis. To our knowledge, this is the first case describing the diagnostic workout for cerebellar atrophy associated with pSS and the subsequent motor rehabilitation. This work highlights the importance of early diagnosis and rehabilitation in patients with central nervous system involvement in pSS.