When a caterpillar falls on a human body, many of its bristles can be broken after touching the skin, and the venom in the hair cavity is injected into the skin. Because the hair cavity of the poisonous hair is full of venom, it can cause severe itching and pain of the skin, and sometimes it hurts like being burned. There may be small papules in the center of the stung skin, and the itching and pain symptoms may last for several hours or longer. Caterpillar dermatitis is a large number of red papules with the same size in a certain part.

Caterpillars are widely distributed, and there are many such caterpillars on various trees. Wear a wide-brimmed straw hat or sun hat and long-sleeved clothes when enjoying the cool under the tree. Don't stay under a tree with caterpillars. If there are caterpillars accidentally falling on your body, don't pat them around, but shake them off gently. If there are toxic hairs on your skin, you can stick them off with medical adhesive tape. If you can't find the medical adhesive tape at the moment, you can use transparent adhesive tape instead. Never scratch or touch, otherwise it will get worse, and there will be a very itchy rash on the body, which will spread quickly and itch beyond words. In severe cases, the rash will also form blisters. After the poisonous hair is completely removed, apply Piyanping, Fusong or calamine lotion to the partially injured skin, which can be applied several times a day and often ice-packed by yourself, and it will heal in two weeks. Those who have severe itching and pain, or have systemic symptoms, or have a serious rash, can take oral antihistamines such as Kemineng and chlorpheniramine, which can relieve itching. Severe patients need to be sent to hospital in time for treatment. If the whole body reacts? Such as fever, headache, abdominal pain, etc., should be sent to the hospital immediately.