What should I do if my hands itch after handling Chinese yam?

The cortex of yam contains a special component that can cause skin irritation upon contact, leading to itching hands. Therefore, you should avoid touching the yam's cortex, especially the delicate outer layer. When peeling the yam, use a knife to remove the skin instead of handling it with bare hands. Secondly, if itching occurs, wash your hands with warm water, apply hand soap, and then gently wipe with a towel. Finally, if the itching persists, seek medical attention for a more professional treatment plan from a doctor.