What should I do if my hands itch after touching yam?

Generally, if your hands itch after touching yam, you can use several methods such as rinsing with plenty of clean water, soaking in hot water, applying vinegar, applying ginger juice, or using calamine lotion. Details are as follows:

1. Rinse with plenty of clean water: This is the most basic method. As soon as itching is noticed, wash both hands immediately with running water. Rinsing helps remove the mucus left on the hands and reduces continuous irritation from allergens. It is recommended to rinse for approximately 10-15 minutes to ensure thorough removal of the allergenic substances.

2. Soak in hot water: Hot water can denature the substances causing the itching. Soak both hands in hot water at a tolerable temperature, about 40-50 degrees Celsius, for 15-20 minutes. The high temperature can denature the protein components causing the allergic reaction, thus reducing skin irritation and relieving itching. However, care should be taken to avoid scalding the skin.

3. Apply vinegar: Vinegar is acidic, while the saponin in yam is alkaline; acid-base neutralization can relieve itching. Use white vinegar or edible vinegar, pour it into the palm, then rub both hands together to evenly apply the vinegar on the hands. Leave it on for a few minutes before rinsing thoroughly with water.

4. Apply ginger juice: Ginger has certain anti-inflammatory and anti-allergic effects. Cut ginger into slices and repeatedly wipe the itchy area with the slices, or extract ginger juice and apply it to the hands. Components in ginger juice can alleviate itching caused by allergic reactions to some extent. This is because ingredients like gingerol in ginger may stimulate skin receptors and interfere with the transmission of itch signals.

5. Apply calamine lotion: Calamine lotion has anti-itching and astringent effects. Under the guidance of a physician, apply an appropriate amount of calamine lotion to the itchy skin on the hands. Do not rinse immediately after application, allowing it to remain on the skin for some time. Components like zinc oxide in calamine lotion can adhere to the skin surface and reduce inflammatory reactions, thereby relieving itching. It can generally be applied 2-3 times daily, with the frequency adjusted according to the severity of itching.

When handling yams, try to avoid direct skin contact with the peel and mucus to reduce the likelihood of allergic reactions.