When summer comes, the skin is inevitably bitten by mosquitoes and sometimes stung by some inexplicable bugs, not to mention that the bugs are not big, but they can cause people a lot of trouble and pain. The cryptophid is one of the culprits that cause insect bite dermatitis. In summer, some people wake up to find one or more stripes or small edematous erythema on the face, neck, shoulders and exposed parts of the limbs. The erythema is densely arranged with small pustules, which may fuse with each other. In mild cases, the lesions may feel tired and burning, while in severe cases, there may be severe pain and systemic symptoms such as dizziness, headache, fever, and local lymph node swelling and pain. This is a common insect bite skin disease in summer and autumn – cryptophid dermatitis. It is a toxin that is secreted by the body of the cryptoptera, so it is customarily called the poisonous cryptoptera, which explains the harmful effects of this small insect. Cryptoptera is a small black ant-shaped insect, about 1 cm long, which often inhabits the woods of fields and beds. During the day, it lies under the wood and stones. At night, it comes out to catch small insects. It is phototropic and likes bright places. When people are resting under the lamp. The cryptomeria crawls quietly on people’s skin. It bites the skin and releases toxins. When you find the bug crawling on you and immediately kill the bug that bites on your skin, a strong acidic toxin in the bug’s body comes in contact with the skin. A toxic substance is released and a skin reaction occurs several hours to a day later, causing cryptophid dermatitis. The various skin reactions and systemic reactions mentioned above occur, and the result is that the small bug leads to big trouble. How to prevent and treat cryptoptera dermatitis in summer: 1. First, pay attention to improving environmental hygiene, removing weeds and garbage from the front of the house, and installing screens to prevent bugs from flying in. Turn on the lights as little as possible before going to bed. 2, found toxic cryptophid insects on the skin, do not pat or pinch the small insects on the skin with your hands, it is best to blow with your mouth or use other objects to pluck the insects to the ground and then trample them to death. 3.The skin crawled by the insects should be washed with soap and water as early as possible, or applied with 10% ammonia. 4, the use of folk remedy vervain can treat cryptophid dermatitis. The method is to use 100 grams of fresh vervain, pounded to get the juice, coated with the affected area, several times a day. Or 100 grams of fresh vervain with 500 ml of water, decocted into 300 ml, with gauze dipped in warm liquid to wash the affected area, 3-5 times a day. This method has the effect of clearing heat and detoxification, activating blood circulation, relieving swelling and pain, and relieving inflammation and itching, which can quickly control the development of dermatitis. 5, now available in hospitals and pharmacies are ready-made creams containing hormones, such as Eudrag, Eloson, Halomethasone cream, etc., which are used topically twice a day and are more convenient and effective. 6, cryptoptera dermatitis such as combined with serious infection or with fever and other symptoms, the need to use antibiotics, the clinical use of penicillin or erythromycin class drugs for treatment. Please do your best to protect yourself in the summer to prevent the occurrence of insect bite skin disease.