Papular urticaria does not appear due to heredity. Papular urticaria is an allergic reaction induced by mosquito and insect bites, such as going outdoors where there are many plants and trees, after being bitten by mosquitoes or after contact with fleas on kittens or puppies, which can lead to the appearance of papular urticaria. Because of the allergic reaction, the rash can spread all over the body, and in severe cases, blistering and oozing can occur. Specific treatment can be given to antihistamines orally, and serious cases can also be given glucocorticoids for treatment. But don’t worry that papular urticaria is hereditary, papular urticaria is not related to heredity and will not be passed on to the next generation. It is recommended to reduce outdoor activities where there are many plants and trees, and to treat insect bites promptly.