What are the symptoms of early or mild parkinson disease?

Slow progression. These symptoms typically involve resting tremor, slowness of body movements & rigidity of muscles & posture. They always begin on one side, then effect the midline (face, voice & balance, & finally do spread to involve the other side. Early pre-motor symptoms include: rbd (acting out dreams while sleeping), anosmia (loss of smell), constipation & depression. Also, slow mental clarity/st memory.