Diagnostic criteria for recurrent whistle infections: 0-2 years: 7 upper whistle infections per year and 3 lower whistle infections per year. 3-5 years: 6 upper whistle infections and 2 lower whistle infections per year. 6-12 years: 5 upper whistle infections per year and 2 lower whistle infections per year. Common causes of recurrent whistle infections: Whistle infections account for 65% of pediatric outpatient visits and 33% of children with recurrent whistle infections, accounting for about 10% of children over the age of 6. The reason for recurrent whistling infections in addition to recurrent microbial infections is the weak resistance and low immunity of the child’s body, which is mainly caused and exacerbated by a number of triggering factors. The common predisposing factors are cold, close contact with whistle infection, concomitant comorbidities, drug effects, poor environment, improper feeding, etc., of which cold is the first predisposing factor, accounting for 73% of the composition
The first predisposing factor was cold, accounting for 73.3 of the composition. Although the predisposing factors are diverse, but usually a combination of effects, and most of the predisposing factors can be avoided and prevented. Malnutrition, anemia and rickets and recurrent whistling infections are causal factors, forming a vicious circle. Artificial feeding, partial feeding, anorexia, failure to add complementary foods at the right time and poor dietary structure can easily lead to vitamin A and zinc, calcium, iron and other trace element deficiencies, which are closely related to the occurrence and development of recurrent infections. Drug abuse is also one of the main causes of recurrent whistling infections, and the irrational use of sweating and antipyretic drugs and hormones is no less important than the abuse of antibiotics, which further reduces the immunity of the weaker ones. In addition, passive smoking and allergic constitution are also important predisposing factors for recurrent whistling infections.