neurologic disorders
Secondary and Atypical Parkinsonism
Diagnosis
Clinical evaluation Poor response tolevodopatherapy For differential diagnosis, sometimes neuroimaging To differentiate Parkinson disease from secondary or atypical parkinsonism, clinicians note whetherlevodoparesults in dramatic improvement, suggesting Parkinson disease. Causes of parkinsonism can be identified by the following: A thorough history, including occupational, drug, and family history Evaluation for neurologic deficits characteristic of neurodegenerative disorders other than Parkinson disease Neuroimaging when indicated Deficits that suggest neurodegenerative disorders other than Parkinson disease include Conjugate Gaze Palsies , signs of corticospinal tract dysfunction (eg, hyperreflexia), 