An uncommon, degenerative neurological disorder that is characterised by the appearance of abnormal calcium deposits and is associated cell loss in particular areas of the brain. Fahr’s disease can be familial, in which is shows either an autosomal recessive or autosomal dominant pattern of inheritance. In most cases, however, the cause of disorder is not actually known.
Symptoms of Fahr’s disease include progressive dementia (deterioration of the brain function) and the loss of acquired motor skills. Restricted movement and increased muscle stiffness can also occur. Possible complications include chorea, characterised by jerky, irregular, rapid movements, or athetosis, characterised by involuntary, slow, writhing movements. There can also be a gradual decline of eyesight.