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.
Nurse practitioners (NPs) and physician assistants (PAs) are healthcare workers who typically work under the supervision of licensed physicians. However, different specialties are available within these professions, and the roles of NPs and PAs are governed by varying state laws.urse Practitioner Overview. Nurse practitioners are registered nurses who have gone on to earn a master's or doctorate degree in a specialty area of nursing, such as adult practice, family practice, pediatrics or women's health.