Fahr's disease: A rare neurological disease

A 40-year-old unmarried female presented with abnormal involuntary choreo-athetoid movements involving both upper limbs for 5 years along with features, such as bouts of disorientation, anxiety, personality changes, reckless behaviour, inappropriate laughter and progressive decline in the neurological status. On neurological examination, her speech was dysarthric with mild choreiform movements involving both upper limbs. She had MMSE score of 20/30. MRI scans of the brain plain T1- and T2-weighted axial and flair coronal images were obtained. It showed calcifications as hyper-intense lesions on T1W and hypo-intense T2W lesions in bilateral basal ganglion and bilateral dentate nuclei of cerebellum, that is consistent with Fahr's syndrome.