In most cases, eating cooked yam is less likely to cause allergies. The common situation that causes yam allergies is that some people are allergic to substances on the surface of yam when handling yam by hand, resulting in redness, itching and tingling of the skin.

Yam tastes good after cooking, which can not only supplement certain nutrition, but also help regulate gastrointestinal function by mucin, amylase and other substances in yam. However, the yam skin contains saponin, and the yam mucus also contains some phytoalkaloids, which will cause certain irritation to the skin, thus causing some people to have some allergic reactions after contacting the yam skin, especially the hand skin. Usually when handling yam, you can avoid direct contact by wearing gloves and paying attention to hand protection. In addition, the possibility of allergic reaction can be effectively reduced by blanching Chinese yam to reduce the content of saponin and plant alkali.

If allergic reaction has occurred, it is recommended to stay away from yam and rinse with cold water. If the symptoms are mild, they only show slight tingling and itching of the skin, which can generally disappear gradually. When the symptoms are serious, it is recommended to go to the hospital as soon as possible, use dexamethasone and other ointments for external use according to the doctor's advice, and take loratadine and other antiallergic drugs orally to alleviate allergic symptoms.