First, if yam is allergic, you can stop itching by washing your hands with soap and cleaning agent. Generally, the cause of allergic reaction to yam is mucus from yam. If you want to stop itching, you can wash your hands with soap and detergent to achieve the effect of stopping itching.

Second, you can also apply essential balm or white wine. Chinese yam allergy can also be coated with essential balm, or you can wash your hands with soap first and then apply white wine. After drying, you can also stop itching by washing your hands with soap again.

Third, you can also relieve itching by roasting with fire. Yam mucus should be washed with soap on your hands first, and then baked slowly on the fire. Be careful not to burn your skin and it can also relieve itching.

You can't eat cucumbers, pumpkins, carrots and bamboo shoots while eating yam. Yam is rich in vitamin C, and these vegetables contain vitamin C-decomposing enzymes, so the nutritional value of eating yam together will be reduced.

You can't eat kansui, alkaline drugs and carp while eating yam. Yam and carp are both grams, and they should not be taken together with kansui and alkaline drugs.