The most common cause of<unk>  disease are sporadic and idiopathic, there are some underlying cause for this disease including genetics, drugs, oxidative stress, iron metabolism, immunologic and inflammatory mechanisms and protein misfolding.
Parkinson's disease causes
Epilepsy causes
Hearing impairment causes
Traumatic brain injury causes
Delirium causes
Parkinson's disease risk factors
Schizophrenia causes
Ataxia risk factors