[Contribution and limitations of evaluation scales in Parkinson's disease].

: Rating scales in Parkinson's disease (PD) are generally reliable but are not widely used in practice. UPDRS is the core assessment of PD, its metrologic properties are well known, and it is simple to use after training. However, cognitive and psychic disorders need complementary approaches. For example, MATTIS seems to be more appropriate in assessing the cognitive deficit and MADRS the depressive symptoms. A patient diary best appreciates motor fluctuations. Activities of daily living rated by the UPDRS allow a global assessment of the patient handicap that may be completed by "the patient's own point of view" through quality of life scales (SF36, PDQ39). For clinical research purposes, time tests and dyskinesia scales following the CAPIT or CAPSIT procedure are required.