Ключевые слова: age, aging, ailment, brain, caucasian, cytoskeletal, degeneration, degenerative, disease, disorder, dystonia, female, girl, glass, hand, health, healthcare, holding, impairment, impediment, incurable, involuntary, lady, mature, medicine, movement, nervous, older, parkinson, parkinsonian, progressive, shuddering, symptom, trembling, tremor, unsteady, water, woman, women,