There is no direct relationship between staying up late and swollen lymph nodes in the neck, but there is a certain indirect relationship. Because the human body is an organically integrated whole, all the organs of the human body are mutually influenced and regulated by each other. For example, staying up late can cause a person’s immunity to be low and induce a cold, which in turn can lead to swollen lymph nodes in the neck after infection. Therefore, staying up late also has an indirect relationship with swollen lymph nodes in the neck. The swollen lymph nodes in the neck can be cured by resting and avoiding staying up late, plus taking medication. In addition, staying up late can also lead to a low immunity of the whole body, which can easily induce diseases of the blood system and cancer. Some blood system diseases or cancer can induce generalized lymph node enlargement, which is very common in clinical practice. Therefore, there is an indirect relationship between staying up late and swollen lymph nodes in the neck.