Fahr's disease appears as a calcification
of certain parts of the brain, including the basal ganglia
, but also certain nuclei of the cerebellum
. It comes in the form of neurological symptoms such as an abnormal gait, lack of coordination
or involuntary movements, the occurrence of seizures or a parkinsonian syndrome, occurring in individuals after the age of 40. It may involve a change of character, and intellectual decline. The progression
of Fahr's disease is degenerative, the patient gradually losing their intellectual, cognitive
, and motor faculties, and is fatal within a few years.