Resting Tremor
Resting tremor is a visible and easily recognizable symptom of Parkinson's Disease. Generally, tremors are unilateral and more prominent distally than proximally (Jankovic, 2008). "Pill-rolling" tremors of the hand involve a movement which appears as if an individual is trying to roll up a small object between their thumb and index fingers (Sawle, 2004). Resting tremors can also involve the lips, chin, jaw, legs and arms in individuals with Parkinson's Disease (Jankovic, 2008; Sawle, 2004). Resting tremor usually stops during action and while an individual sleeps (Jankovic, 2008). Individuals with essential tremor may be misdiagnosed with Parkinson's Disease; however, essential tremor differs from resting tremor in that it is more likely to involve the neck and voice (Jankovic, 2008; Sawle, 2004). The presence of tremor varies among individuals with Parkinson's Disease and varies during the course of the disease itself (Jankovic, 2008).