Ключевые слова: age, aging, arm, arthritis, asian, blood, brown, care, changes, color, creases, elder, finger, fingers, forearm, gout, hand, hands, health, help, helping, joint, joints, life, man, melanin, old, osteoarthritis, pain, painful, patches, pigment, pigments, problem, rheumatoid, senile lentigo, senior, skin, solar lentigines, sprain, support, vein, veins, vessel, vessels, wrinkles, wrist,