* Imaging studies - A CT scan or MRI of the brain might help determine potential causes. An MRI can sometimes show shrinkage of the cerebellum and other brain structures in people with<unk> . It may also show other treatable findings, such as a blood clot or benign tumour, that could be pressing on the cerebellum. * Lumbar puncture (spinal tap) - A needle is inserted into the lower back (lumbar region) between two lumbar vertebrae to obtain a sample of cerebrospinal fluid for testing. * Genetic testing - Determines whether the mutation that causes one of the hereditary<unk>  conditions is present. Tests are available for many but not all of the hereditary<unk> s.
Ataxia
Pure autonomic failure
Ataraxia
Xanthopsia
Paresthesia
Cynanthropy
Dysosmia
Aspermia