Catatonia

Definition

Catatonia is a behavioural syndrome marked by an inability to move normally. It can be a part of various mental disorders, including mood disorders, psychotic disorders, and other medical conditions.

Catatonia Criteria:

The DSM-5 categorises catatonia under two headings: Catatonia Associated with Another Mental Disorder (Catatonia Specifier) and Catatonic Disorder Due to Another Medical Condition.

1. Catatonia Associated with Another Mental Disorder (Catatonia Specifier):

• This specifier is used if the clinical picture is dominated by at least three of the following symptoms:
  1. Stupor: No psychomotor activity; not actively relating to the environment.
  2. Catalepsy: Passive induction of a posture held against gravity.
  3. Waxy Flexibility: Slight, even resistance to positioning by the examiner.
  4. Mutism: No, or very little, verbal response (exclude if known aphasia).
  5. Negativism: Opposition or no response to instructions or external stimuli.
  6. Posturing: Spontaneous and active maintenance of a posture against gravity.
  7. Mannerism: Odd, circumstantial caricature of normal actions.
  8. Stereotypy: Repetitive, abnormally frequent, non-goal-directed movements.
  9. Agitation, not influenced by external stimuli: Excessive motor activity without apparent cause.
  10. Grimacing: Odd facial expressions.
  11. Echolalia: Mimicking another’s speech.
  12. Echopraxia: Mimicking another’s movements.

1. Catatonic Disorder Due to Another Medical Condition:

• Diagnosis requires the presence of three (or more) of the catatonic symptoms above and evidence from the history, physical examination, or laboratory findings that the symptoms are specifically attributable to catatonia itself, rather than being a manifestation of another neurodevelopmental, mental, or medical disorder such as schizophrenia or neuroleptic malignant syndrome. This distinction is essential for accurate diagnosis and appropriate treatment planning.

Assessment and Diagnosis

• Clinical Assessment: Thorough psychiatric and medical history, mental status examination, and physical and neurological examination.
• Differentiating from Other Disorders: Essential to distinguish catatonia from disorders like Parkinson’s disease, neuroleptic malignant syndrome, and akinetic mutism.
• Use of Rating Scales: The Bush-Francis Catatonia Rating Scale is often used for assessment.

Treatment

• Medical Attention: Immediate medical attention is critical, especially if the patient is mute or refusing food and water.
• Benzodiazepines: Lorazepam trial is often the first step in treatment.
• Electroconvulsive Therapy (ECT): Used in severe cases or when medication is ineffective.

Prognosis

• The outcome can vary greatly depending on the underlying cause and the timeliness of treatment.

Conclusion

Catatonia is a complex clinical syndrome that requires careful assessment and treatment. Its presentation can vary widely, and it often occurs in the context of a variety of psychiatric and medical conditions. Accurate diagnosis and timely intervention are crucial for a positive outcome.