A small series described lorazepam responses in children with motor and verbal unresponsiveness after illness. Its strong wording about the challenge test exceeded what four cases could establish.
The clinical observations
Chandra and colleagues evaluated four girls after febrile or central-nervous-system illness, investigating infectious and metabolic explanations. The report used diagnostic criteria and catatonia ratings and described treatment responses.
Three of four patients were independent at one month. The series therefore documents encouraging short-term courses in selected cases, rather than a controlled estimate of treatment effect.
A response is not a validated diagnostic accuracy study
The abstract’s statement that the lorazepam challenge always provides the diagnosis should not be interpreted as established sensitivity or specificity. There was no broad comparator population with other causes of unresponsiveness to test that proposition.
Likewise, four female cases cannot establish population sex prevalence, and short follow-up cannot determine long-term prognosis. EEG or nonspecific laboratory abnormalities did not independently identify a single mechanism.
Use in a report
The series supports considering catatonia alongside medical explanations when a child remains unresponsive. It does not justify abandoning the differential diagnosis after one drug response or establish that a negative challenge excludes the syndrome. Retain baseline signs, route, timing, and the subsequent clinical course.
Source paper
Original analysis of the supplied journal article, identified as PMC4676207.
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