A dental assistant. hold a current Arizona Board-approved certificate in radiology. To obtain a certificate, one must: 1a. Pass the national DANB Radiation Health and Safety (RHS) exam, AND. 1b. Receive the Arizona Radiologic Proficiency Certificate, issued by DANB, or. 2a.
Parkinson's disease (PD) is a type of movement disorder. It happens when nerve cells in the brain don't produce enough of a brain chemical called dopamine. Sometimes it is genetic, but most cases do not seem to run in families. Exposure to chemicals in the environment might play a role.
Parkinson disease Parkinson's disease is a disorder of the nervous system causing tremors stiffness and slow movement. Thoracic spinal stenosis Thoracic spinal stenosis can cause pain in your back and legs, loss of bladder or bowel function, and more.