Let's look at the next Cryptopteroptera bite
Cryptoptera has no glands outside the body and does not sting (cryptoptera bites do not hurt, but the condition progresses), but the venom in the body (strong acidic toxin, pH 1 to 2) will flow out after being beaten. After the human skin comes into contact with a small amount of venom (such as cryptoptera crawling over the skin), the skin will appear punctate, flaky or cord-like erythema, followed by gray-brown necrosis in the center. If the injury area is not large, there will be a slight itching and pain; if the injury area is large (such as multiple skin crawled by cryptoptera), there will be a strong itching and painful feeling; if the human skin comes into contact with a large amount of venom (such as venom flowing to the skin), the injured area will produce blisters, showing severe burn-like changes. In summary, we must pay close attention to the following points in combination with the zoological habits of Cryptoptera: 1, summer and autumn 2, dusk and evening 3, phototropism (bitten at home, and the possibility is very large) 4, the most critical point: no pain, no pain, no feeling, but the disease is progressively aggravated, early skin itching, later appearance of local skin blisters, ulceration, swelling and other manifestations of allergic dermatitis.