In Chinese medicine, common colds in children are categorized as cold-induced, heat-induced, damp-heat, and epidemic colds. Within the context of colds, complications often arise in three forms: phlegm retention, food retention, and particularly startle retention.

Colds in children that result in difficulty with food retention are caused by damage due to food retention. This is because children inherently have a weak spleen that cannot hold substances well; they lack self-restraint in eating and drinking. After being affected by external pathogenic factors, the spleen fails to transport and transform food effectively, leading to stagnation in the middle burner, impeding the flow of vital energy, and causing symptoms such as abdominal distension, pain, loss of appetite, and even vomiting.