What effect can a knot in one's heart behind the child's neck have on health?

The pimple on the back of the child's neck may be lymphadenopathy, which is the place where the body produces immune response after receiving antigen stimulation, and has the functions of filtering, proliferation and immunity. If the child's lymphadenopathy is caused by infection, then as the infection subsides, the lymph nodes will gradually return to normal size. However, if lymphadenopathy lasts for a long time or is accompanied by other symptoms, it is recommended to seek medical advice in time.