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.
Parkinsonâs disease (PD) is a disorder that affects the nervous system. It is a chronic condition that slowly worsens over time. Parkinsonâs disease causes symptoms that impact a personâs ability to move (motor symptoms) such as tremor at rest, stiffness of the limbs, difficulty walking, and impaired balance. Other motor symptoms can also include small handwriting, stooped posture, softness of voice, and problems swallowing.