Table 1

Prevalence of individual non-motor symptoms (NMS) items

NMS symptomsPercentage (frequency)
Constipation56 (48)
Nocturia49 (42)
Feeling sad or blue47 (40)
Forgetting to do things45 (38)
Feeling light-headed/dizzy40 (35)
Feeling anxious or panicky36 (31)
Urinary urgency35 (30)
Unexplained pain30 (26)
Problems with sex30 (26)
Difficulty sleeping29 (25)
Loss or change in ability to taste or smell29 (25)
Loss of interest in surroundings29 (25)
Dribbling of saliva28 (24)
Excessive sweating24 (21)
Unpleasant sensation in the legs22 (19)
Frightening dreams22 (19)
Unexplained change in weight20 (18)
Falling19 (15)
Difficulty in swallowing food or drink or problems with choking17 (15)
Difficulty concentrating or staying focused16 (14)
Swelling in the legs14 (12)
Daytime somnolence13 (11)
Double vision14 (12)
Decreased/increased libido14 (12)
Talking or moving in sleep11 (10)
Incomplete bowel emptying11 (10)
Vomiting or feeling of sickness10 (9)
Delusions8 (7)
Illusions8 (7)
Faecal incontinence6 (5)