The immediate cause of Parkinson's disease or Parkinsonian-like syndrome is the lack of the neurotransmitter dopamine in the brain.
It is a recognised symptom of Parkinsons Disease.
Sjogren's syndrome is an autoimmune disease that causes chronic dry mouth and eyes.
Reiter's syndrome results from a combination of genetic vulnerability and various disease agents.
Parkinsons is a disease that causes a breakdown of the central nervous system. As with many diseases there is no set time an individual can live for after being diagnosed, but will eventually lead to being unable to care for one's self.
Cushing syndrome, Prader Willi syndrome, and Simpson-Golabi-Behmel Syndrome can all cause obesity.
Hearing impairment
Complex Regional Pain Syndrome is a chronic illness, meaning it is a disease. Doctors aren't really sure what causes the disease to manifest itself.
Wiskott-aldrich syndrome..a rare genetic disease.
The disease that causes bones to become weak is called "Osteoporosis".
Lambert-Eaton myasthenic syndrome is an autoimmune disease that causes muscle weakness and easy fatigability, particularly in the pelvic muscles and thighs.
Down syndrome is purely genetic. There are no known environmental causes of the disorder. It is not a disease that is passed from parent to child. It is simply an disorder when the chromosomes split during cell division during development. The mayoclinic describes the causes: http://www.mayoclinic.com/health/down-syndrome/DS00182/DSECTION=causes
AIDS (Acquired Immune Deficiency Syndrome) is a diagnosis and not a disease. HIV (Human Immunodeficiency Virus) is the virus that causes someone to develop AIDS.