Aug 7, 2025 · Rigidity is the most common and hallmark extrapyramidal symptom: The most severe manifestation is lead-pipe rigidity (stable resistance throughout the range of motion).

Lead Pipe Rigidity - Refers to hypertonic state throughout the range of motion i.e simultaneous co-contraction of agonists and antagonists and this is reflected in an immediate resistance to a …

To test for the presence of rigidity in the lower extremity, place your top hand under the patient’s knee to fully support the weight of the leg and make sure the extremity is relaxed.

Dec 21, 2024 · Lead pipe rigidity. This type of stiffness is characterized by a feeling of frozen muscles. The muscles feel stuck and unable to move.

Aug 3, 2023 · Lead Pipe Rigidity: Lead pipe rigidity is a constant and uniform resistance felt during passive movement of a limb. It is commonly associated with Parkinson’s disease and results …

Presence of ‘lead pipe’ rigidity is typical of NMS, while serotonin syndrome typically manifests with tremor and hyperreflexia Elevations in CK, LFTs, and WBC, coupled with a low iron level, …

Jun 12, 2020 · What are the different types of rigidity? Rigidity is characterized by an increase in muscle tone. It affects both the muscles used to flex and extend your joints. The two types of …

Sep 25, 2025 · Lead-pipe rigidity is a diffuse, velocity-independent stiffness of muscles, most commonly seen in Parkinson’s disease. Recognizing this sign helps distinguish Parkinsonian …

Apr 14, 2025 · Lead pipe rigidity and cogwheel rigidity are types of muscle tone abnormalities observed in neurological conditions, particularly in Parkinsonism. Lead pipe rigidity refers to a …

Rigidity of the muscles on passive movement is characteristic of Parkinson's disease but must be distinguished from the rigidity resulting from upper motor neuron lesions, for example, in …