Diagnosing Parkinsonism

When a diagnosis of PD is considered, it is imperative for the physician to exclude pharmacologically-induced Parkinsonism. Many drugs may produce parkinsonian extrapyramidal effects (Table 1).

Learning Bite

The extrapyramidal features of PD are referred to as Parkinsonism. They are often caused by drugs.

Medications that may produce Parkinsonism
Phenothiazines
Butyrophenones
Selective serotonin reuptake inhibitors (SSRI) e.g. citalopram or fluoxetine
Amiodarone
Diltiazem
Metoclopramide
Sodium valproate

Table 1 Medications that may produce Parkinsonism