Table 1 Seven symptom domains and 52 symptoms

Cognitive impairment

7

Memory impairment, disorientation, executive dysfunction, attention dysfunction, fluctuating cognition, visuospatial dysfunction, other cognitive impairments

Parkinsonism

11

Bradykinesia/akinesia, rigidity, action tremor, rest tremor, postural instability, gait disturbance (short-stepped gait), freezing of gait, abnormal posture, salivation, fall, dysphagia

Psychiatric symptoms except for sleep disturbance and abnormal eating behavior

12

Delusions, visual hallucinations, hallucinations other than visual hallucinations, agitation/aggression, depression, anxiety, apathy, disinhibition, aberrant motor behavior, negativism, delirium, other psychiatric symptoms

Eating behavior-related problems

7

Loss of appetite, increase in appetite, weight loss, weight gain, food refusal, eating non-edible things, unbalanced diet

Sleep-related disorders

7

Rapid eye movement sleep behavior disorder, daytime somnolence, day–night reversal, nighttime sleep disorder, sudden sleep, restless legs syndrome, periodic limb movement disorder

Autonomic dysfunction

7

Orthostatic hypotension, disturbance of sweating, constipation, nighttime dysuria, daytime dysuria, syncope, dizziness

Sensory disorders

1

Dysosmia