Evolution of neuroleptic-induced extrapyramidal syndromes under long-term neuroleptic treatment.

Abstract:

BACKGROUND:The long-term evolution of neuroleptic-induced extrapyramidal syndromes (EPS) of Parkinsonism, akathisia and tardive dyskinesia (TD) is still a controversial issue worth exploring. METHOD:A total of 200 inpatients on regular typical neuroleptics (NL) and/or clozapine were assessed in 1995 with regard to the prevalence of EPS. Altogether, 83 patients could be reassessed in 2003/04 (63 had died) using the same methods. Strict definitions of EPS were used. The complete account of NL therapy the patients were prescribed between 1995 and 2003/04 (including atypical NL other than clozapine) was considered. RESULTS:The prevalences found in 1995 and 2003/04 were 17% and 29% for Parkinsonism, 14% and 14% for akathisia, and 24% and 13% for TD. There were considerable intra-individual fluctuations in EPS occurrence even when the overall prevalence rate remained the same. In intra-individual comparisons of EPS ratings on both assessments, there was a tendency for worsening of Parkinsonism to be associated with a current (2003/04) therapy with typical NL; worsening of akathisia was associated with a current therapy with atypical NL other than clozapine, amelioration of akathisia with a current therapy with clozapine; and, basically, there were no significant associations found between the changes in TD ratings and the long-term therapy with typical NL, clozapine, and other atypical NL, considering cumulative doses of all these drugs. In a multivariate analysis, there was a tendency for the long-term evolution of TD to depend on illness duration as the only variable. CONCLUSIONS:There are intra-individual fluctuations in all EPS over longer time periods. The choice of current NL therapy has an impact on Parkinsonism and akathisia. The long-term evolution of TD appears independent of NL prescriptions.

journal_name

Schizophr Res

journal_title

Schizophrenia research

authors

Modestin J,Wehrli MV,Stephan PL,Agarwalla P

doi

10.1016/j.schres.2007.10.018

subject

Has Abstract

pub_date

2008-03-01 00:00:00

pages

97-107

issue

1-3

eissn

0920-9964

issn

1573-2509

pii

S0920-9964(07)00495-1

journal_volume

100

pub_type

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