Marked decrease in reactivity to the environment and reduction of spontaneous movements and activity in catatonic schizophrenia is?

Appeared in: RIMS Nursing Officer - 2022

Explanation

Stupor, which is defined as a state of psychomotor retardation involving immobility, mutism, and a significant decrease in reactivity to environmental stimuli.
The question's description of a 'marked decrease in reactivity to the environment and reduction of spontaneous movements' is the classic definition of stupor in the context of catatonia.
According to DSM-5, stupor is one of the core diagnostic signs of catatonia, representing the extreme end of decreased motor activity.

Why Other Options Were Wrong

Option B: Catalepsy is incorrect because it specifically refers to the passive induction of a posture that is then held against gravity. It is about holding an imposed position, not a general lack of spontaneous movement.
Option C: Rigidity is incorrect as it describes increased muscle tone and resistance to passive movement. A patient with rigidity feels stiff when someone tries to move their limbs.
Option D: Waxy flexibility (cerea flexibilitas) is a specific type of catalepsy. It involves a slight, even resistance to being moved, after which the limb remains in the new position. It does not describe the overall state of unresponsiveness.

Related Visual

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Motor Symptoms of Catatonia as background academic context rather than a clinical decision trigger.
A patient in a catatonic stupor is at high risk for complications of immobility, including pressure ulcers, deep vein thrombosis (DVT), and contractures. Nursing care must prioritize safety and physiological stability.
Nursing interventions include frequent repositioning, passive range-of-motion exercises, ensuring adequate hydration and nutrition (often via NG tube), and monitoring vital signs and skin integrity.
What if? If a patient in a stupor suddenly becomes agitated and hyperactive, this could signify a switch to 'catatonic excitement,' another form of catatonia, which requires immediate intervention to ensure the safety of the patient and others.

How to Approach the Question

First, analyze the question stem to identify the key descriptors. Here, the key phrases are 'marked decrease in reactivity' and 'reduction of spontaneous movements'.
This is a factual recall question that requires knowledge of psychiatric terminology. Your goal is to match the description to the correct term.
Define each option in your mind. Stupor = unresponsiveness/immobility. Catalepsy = holding an imposed posture. Rigidity = stiffness. Waxy flexibility = 'moldable' limbs.
Compare the description in the stem with your definitions. The description perfectly matches the definition of stupor.
Select the option that is a direct and complete match, eliminating others that describe more specific or different phenomena.

Concept Tested & Keywords

Concept Tested: Motor Symptoms of Catatonia
Stem keywords: catatonic schizophrenia, marked decrease in reactivity, reduction of spontaneous movements
Lead-in keywords: is

Question ID

Q8knvDVHlvE3l4HVuS4xiC

Reference Book

E6 Robert Boland, Marcia L. Verduin - Kaplan and Sadock's Comprehensive Text of Psychiatry-Wolters Kluwer Health (2024) (pp 1-16525 of 16525) p. 4738-4740

E6 Kaplan Sadock's Synopsis of Psychiatry-2022 (pp 1-3768 of 3768) pp. 1090-1092, 1091-1093

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