Nosebleeds are a common symptom. In traditional Chinese medicine, they are called "epistaxis". Statistics show that about 60% of people have experienced at least one nosebleed in their lifetime. Why do nosebleeds occur so frequently? The main reason is that there is a particularly prone to bleeding area in the nasal cavity, located in the anterior lower part of the nasal septum - the "nasal easy bleeding zone". This area is adjacent to the entrance of the nostrils, and many external pathogenic factors, such as harmful gases, dust, and trauma, first attack it. The local mucous membrane is more likely to become inflamed, eroded, dried, crusted, or traumatized; in terms of tissue structure, the nasal mucous membrane in this area is inherently thinner, but contains particularly rich and superficial blood vessels, with five arterial and venous branches intersecting and anastomosing into a network here.
So why do nosebleeds particularly "visit" children? This is related to some characteristics of children themselves, such as the high prevalence of allergic constitution in children, and the fact that many patients with congenital bleeding disorders (such as hemophilia) often develop bleeding symptoms in childhood. For example, during an attack of allergic rhinitis, frequent nose-rubbing and nose-blowing due to nasal itching, continuous sneezing, and runny nose can easily cause nasal vessel rupture. Many children have poor dietary habits, such as long-term picky eating, disliking vegetables and fruits, resulting in vitamin C deficiency, which increases the fragility of blood vessels. They also tend to overeat chocolate, barbecued and fried foods, which easily lead to "heatiness" and frequent constipation. Some children who lack exercise often have weaker immunity and frequently catch colds. When they have a fever, the nasal vessels dilate even more, and the blood flow accelerates... All of these factors make children prone to nosebleeds.
Most nosebleeds in children occur in the "nasal easy bleeding zone". Often, blood just flows out of the nostrils for no apparent reason. Sometimes, it occurs in the middle of the night, affecting one or both sides alternately. The amount of blood is usually not large and can be easily stopped, but it often recurs frequently. Many of these children have had experiences of nose injuries, which may lay the foundation for recurrent bleeding.