Fahr's Syndrome Presenting with Dementia and Severe Hypocalcemia Decades after Total Thyroidectomy in A Woman Affected by Chronic Renal Failure and Psoriatic Arthritis: A Precipitating Role for Risankizumab?

Abstract

Fahr's phenomenon is a rare neurological disorder characterized by calcifications of several structurers of the human brain, including the basal ganglia, the dentate nuclei of the cerebellum, the thalamus, and the hippocampus. It may exist in an idiopathic form or it can be associated to calcium dysmetabolism due to parathormone (PTH) defect or signaling. Symptoms may span from parkinsonism to psychiatric syndromes, ataxia, convulsive seizures and dementia.