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Rigidity is a severe state of hypertonia where muscle resistance occurs throughout the entire range of motion of the affected joint independent of velocity. It is frequently associated with lesions of the basal ganglia. Individuals with rigidity present with stiffness, decreased range of motion and loss of motor control.
Hypokinesia is characterized by a partial or complete loss of muscle movement due to a disruption in the basal ganglia. [citation needed] Hypokinesia is a symptom of Parkinson's disease shown as muscle rigidity and an inability to produce movement. It is also associated with mental health disorders and prolonged inactivity due to illness ...
In psychology, rigidity, or mental rigidity, refers to an obstinate inability to yield or a refusal to appreciate another person's viewpoint or emotions and the tendency to perseverate, which is the inability to change habits and modify concepts and attitudes once developed. [1] [2]
Catalepsy (from Ancient Greek katálēpsis, κατάληψις, "seizing, grasping") is a neurological condition characterized by muscular rigidity and fixity of posture regardless of external stimuli, as well as decreased sensitivity to pain. [1]
Rigidity (neurology), an increase in muscle tone leading to a resistance to passive movement throughout the range of motion Rigidity (psychology) , an obstacle to problem solving which arises from over-dependence on prior experiences
In many people with SPS, muscle rigidity eventually progresses from the trunk to the limbs — first affecting muscles closest to the trunk, then further. [6] Stiffened limbs can affect a person's balance and gait, causing awkward 'statue-like' falls, where the affected person cannot put out their arms to soften the impact. [6]
Malignant hyperthermia and malignant catatonia share features of autonomic instability, hyperthermia, and rigidity. However, malignant hyperthermia is a hereditary disorder of skeletal muscle that makes these patients susceptible to exposure to halogenated anesthetics and/or depolarizing muscle relaxants like succinylcholine. [53]
The extent of the hyperkinesia exhibited in the disease can vary from solely the little finger to the entire body, resembling purposeful movements but occurring involuntarily. In children, rigidity and seizures are also symptoms. [11] Other hyperkinetic symptoms include: Head turning to shift eye position; Facial movements, including grimaces