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Does severity of Parkinson's disease vary according to season?
Author(s) -
Postuma Ronald B.,
Arenovich Tamara,
Lang Anthony E.
Publication year - 2005
Publication title -
movement disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.352
H-Index - 198
eISSN - 1531-8257
pISSN - 0885-3185
DOI - 10.1002/mds.20358
Subject(s) - rating scale , parkinson's disease , disease , temperate climate , seasonality , severity of illness , psychology , medicine , biology , ecology , developmental psychology
In temperate climates, many factors that may influence function in Parkinson's disease (PD) vary according to season. We examined whether severity of PD, as measured by the Unified Parkinson's Disease Rating Scale (UPDRS), varied with the season of evaluation. We found no evidence for seasonal fluctuation in the UPRDS scores, suggesting that, although considerable day‐to‐day variation may exist in PD, there is little monthly or seasonal variation. © 2004 Movement Disorder Society