Are depression and anxiety co-morbid but dissociable in mild Parkinson 's disease : A prospective longitudinal study of patterns and predictors?
Although depression and anxiety are frequently co-morbid in PD, they were dissociable from each other. They had distinct trajectories and different longitudinal relationships with demographic, motor, and non-motor factors that were unique to each disorder.
Older Chinese with depression were more likely to have multiple medically unexplained somatic symptoms, particularly fatigue, insomnia, loss of appetite and gastro-intestinal problems. Health care professionals need to be aware of this pattern of somatization and take active steps to rule out any underlying psychological etiology.