Habitual Patella Dislocation in a patient with Osteogenesis Imperfecta

Fahr's disease is characterized by idiopathic bilateral deposition of calcium in the striopallidodentate area. We are presenting 83-year-old female, who failed responding while having lunch around 10 AM soon after she lost consciousness for an hour. It was associated with difficulty in walking, mood disturbances, fatigability, blurring of vision and occasional dizziness since past 4 months. Her neurological examination revealed Parkinsonian features. Her computed tomography of head report showed bilateral, symmetrical, large area of calcification over the basal ganglia, the thalamus and the cerebellum. To rule out the seizure disorder we have done an electroencephalogram and some laboratory test including calcium, Phosphorus, Parathyroid hormone and magnesium, vitamin D which were suggestive of Fahr's disease.