PD is challenging to diagnose in the early stages
because the first signs and symptoms are often subtle
and vague. There are 4 cardinal symptoms of PD
known through the acronym TRAP: Tremor at rest,
Rigidity, Akinesia (or bradykinesia), and Postural
instability.8 PD patients often present with diverse
lifestyles and profiles; therefore, motor and nonmotor
signs and symptoms should be evaluated in the
context of each patient’s needs and goals.9