Psychomotor disadaptation syndrome. A new clinical entity in geriatric patients.

Psychomotor Disadaptation Syndrome (PDS) is characterized by backward disequilibrium in a sitting and standing position, reactional hypertonia, an alteration of postural reactions, gait modifications, and fear of falling. PDS may be the result of a loss of postural reserves, reaching a frailty threshold that does not allow subjects to maintain an adequate functional level. This clinical picture may be associated with frontal-subcortical dysfunction in which microangiopathy could play a key role. PDS may be triggered by numerous factors, such as cardiovascular and metabolic diseases, falls, and bed rest. In addition to medical and neurological evaluations, a specific rehabilitation program is one of the most important aspects of the management of patients showing PDS.