Rigidity in Parkinson’s disease is a primary motor symptom characterised by muscle stiffness and resistance to movement. Rigidity can affect your arms, legs, and trunk. This stiffness goes beyond what would be expected from normal aging or arthritis and can lead to a decreased range of motion.
There are two main types of rigidity: lead-pipe rigidity, where the resistance is constant throughout the movement, and cogwheel rigidity, where the resistance is intermittent, creating a ratchet-like effect.
Rigidity can cause discomfort, pain, and difficulties with everyday activities, such as walking, dressing, and writing.
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