This pattern of calcifications can be idiopathic (so-called Fahr's Disease), or as a secondary phenomenon from hypoparathyroidism. Most often, these calcifications are an incidental finding with no clinical significance. However, in Fahr's Disease, patients may have deterioration of both motor and mental functions. In addition, chorea and athetosis may be seen as late phenomena. The etiology of this disorder is unknown; both sporadic and familial cases have been reported.