Ключевые слова: aging, background, board, brain, care, chalkboard, color, concept, degenerative, dementia, diagnosis, disease, disorder, dopamine, health, illness, medicine, medicines, morbus, motor, muscle, neurology, nobody, object, parkinson, parkinsonian, parkinsonism, pills, senior, shaking, symptom, syndrome, system, table, text, top, treatment, tremble, trembling, tremor, view, wooden, word,