People may experience: Tremor: can occur at rest, in the hands, limbs, or can be postural Muscular: stiff muscles, difficulty standing, difficulty walking, difficulty with bodily movements, involuntary movements, muscle rigidity, problems with coordination, rhythmic muscle contractions, slow bodily movement, or slow shuffling gait Sleep: daytime sleepiness, early awakening, nightmares, restless sleep, or sleep disturbances Whole body: fatigue, dizziness, poor balance, or restlessness Cognitive: amnesia, confusion in the evening hours, dementia, or difficulty thinking and understanding Speech: difficulty speaking, soft speech, or voice box spasms Mood: anxiety or apathy Nasal: distorted sense of smell or loss of smell Urinary: dribbling of urine or leaking of urine Facial: jaw stiffness or reduced facial expression Also common: blank stare, constipation, depression, difficulty swallowing, drooling, falling, fear of falling, loss in contrast sensitivity, neck tightness, small handwriting, trembling, unintentional writhing, or weight loss