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.
In an outpatient practice such as mine, the distinction between doctorsâ and nursesâ roles can be more subtle. Nurse practitioners, who have both bachelors and masters degrees plus special certification, prescribe medication, perform physical exams, and act in many ways indistinguishable from doctors.