1. Upper respiratory tract infections The average number of upper respiratory tract infections in children is 6-8 times/year. Of these, 5-10% will turn into acute sinusitis.
2. Atopic regime Almost 50% of children with sinusitis test positive for allergens, and almost all children with refractory sinusitis in the United States test positive for allergens.
3. Adenoid hypertrophy Adenoid hypertrophy, as a common disease in children. Due to blockage of the posterior nostril; and as a reservoir of bacteria, it is prone to bacterial infection and complications of sinusitis. Meanwhile, adenoidectomy is effective in about 70% of children with combined sinusitis.
4. Physiological immunodeficiency The immune system of children can only develop at the age of 12-15 years, so children of low age often have physiological immunodeficiency.
5. Congenital genetic diseases such as: cystic fibrosis of the lung, congenital cilia immobility syndrome.
6. Gastroesophageal reflux disease is currently a scientific research hotspot, and many studies have shown that gastroesophageal reflux disease is associated with sinusitis.