Muscle weakness, or myasthenia, is a decrease in strength in one or more muscles. It is a common symptom of muscular, neurological and metabolic disorders. Muscular diseases, such as muscular dystrophy and dermatomyositis (disorder characterized by muscle inflammation), are common causes of muscle weakness.
Rating Newest Oldest. Best Answer: A doctor has a degree from medical school (4 years, either an MD or a DO) and has gone through residency (anywhere from 3 to 10 additional years of training). They are licensed to practice medicine or surgery (or both) independently, write prescriptions, etc.
Another difference to. consider when looking at a nurse practitioner vs physicianâs assistant career is the areas of specialization that are. available. NPs can work in many different and diverse areas, such as geriatrics, mental health, pediatrics and. womenâs health.