Evaluation of Anticholinergic Load

Drugs with anticholinergic properties may cause central and peripheral side effects. Several scales have been developed to evaluate the anticholinergic effect of drugs. Numerous studies have been published, showing a link between the anticholinergic load and the occurrence of adverse effects in the elderly. Anticholinergic Cognitive Burden is a scale that identifies the severity of adverse effects of anticholinergic drugs specifically on cognition including cognitive decline, mental confusion, mild cognitive impairment, and dementia. It was developed from reviews of the medical literature and the calculation of drug affinities for muscarinic receptors. This list of drugs was presented to a team of experts including geriatricians, psychogeriatrists geriatric nurses and pharmacists, who assigned these drugs three scores ranging from 1 to 3: * score 1: drugs with a possible anticholinergic effect on cognition demonstrated in vitro by its affinity for the muscarinic receptor or by calculation of the ASA level (anticholinergic activity of the serum), but without relevant clinical evidence of cognitive adverse effects; * scores 2 and 3: drugs whose moderate or severe anticholinergic effect on cognition has been clearly established clinically. The drugs of scores 2 or 3 are differentiated by their ability to cause confusion and their properties to penetrate or not the blood-brain barrier. The sum of the scores of the different drugs taken by the patient determines the cumulative cognitive risk score related to anticholinergics. This ACB scale seems to be the most relevant in Parkinsonian patients. Parkinson's disease (PD) is described for the first time in 1817 by an English doctor who gives it his name. Parkinson's disease is a chronic, slowly progressive condition defined by the presence of motor symptoms (resting tremor, slowness and difficulty of movement or bradykinesia, muscle rigidity, equilibrium disorders) associated with variable non-motor symptoms ( such a