Suggests that neuroleptic malignant syndrome may be a variant of catatonia rather than a distinct entity.
May support reclassifying NMS as catatonia variant in select cases; leaves open diagnostic merger pending higher-level evidence.
Separate episodes of both catatonia and the so-called 'neuroleptic malignant syndrome' (NMS) occurred within the same patient. The only evidence for NMS in this case was prior administration of a neuroleptic and the presence of generalised muscular rigidity. It is suggested that it is misleading to view these conditions as separate diagnostic entities and that NMS is probably more correctly incorporated into the catatonic disorders.
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D. A. C. White (1992) studied this question.
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