SenileHuman body force is weaker, the skin attenuates, sebaceous glands gradually atrophic, had bathed diligent, the skin becomes easily dry, cause Sao to itch.

• 老年人体力较弱，皮肤变薄，皮脂腺逐渐萎缩，洗澡过勤，皮肤容易变得干燥，引起瘙痒。