Twelve-year-old girls often have nosebleeds. What is the reason? Thank god, help me.

Children's nosebleeds are usually caused by injuries in the front of the nasal septum, where several blood vessels meet, especially arteries, so there is a lot of bleeding. Children who are prone to nosebleeds can be divided into the following categories: First, children who have a cold-because a cold will reduce the resistance of the nasal mucosa, and the symptoms of a cold (stuffy nose, runny nose, runny nose, etc. ) will make children do some actions that directly hurt the nasal mucosa (such as exertion), so it is easy to have nosebleeds. Second, children with nasal allergies-because of itchy nose, runny nose and stuffy nose, they will often lick their noses, making the nasal mucosa often painful and bleeding. Third, children who are used to picking their nostrils with their fingers-because they often pick their nostrils, nose and other entrances and nasal vestibules are repeatedly injured, scabbed, and then stained with booger, children can't even help digging, such a vicious circle, over time, it is easy to bleed. Fourth, children with blood diseases-although the nose is not injured, it often has nosebleeds, which are generally slow but frequent. This type of nosebleed is usually caused by blood diseases. In this case, they must go to the hospital for a blood test immediately, just in case. Fifth, nosebleeds may be because the air is dry and the nasal mucosa is dry and fragile. It is easy to bleed. You can go to the hospital to prescribe some paraffin oil or peppermint oil to smear the nasal cavity, or ask a doctor to check the diagnosis and treat the symptoms to avoid frequent bleeding. Parents should not lose heart when they see a lot of bleeding. It is best to press the alar with their thumb and middle finger at the same time, which will compress the bleeding site and stop the bleeding. After about five minutes, let go to see if it stops bleeding. If the bleeding continues and the nose is pressed repeatedly for five to ten minutes, most of the bleeding can be stopped. If not, it will stop the bleeding.