Why are swollen lymph nodes dangerous?

Harsh coughing can break small capillaries in your airways and they seal themselves back up quickly so that is probably where the blood is coming from. The lymph node is doing its job which is to attack any infection in your neck, throat, head and that is probably why it is swollen. This will go back down when you are well. read more

Let me first reassure you that the vast majority of swollen lymph nodes soon return to normal size on their own without the need for an antibiotic and do not indicate a serious or dangerous medical condition. read more

Not at all. Lymphatic system absorbs/carries things too big to go into the arteries/veins like bacteria eaten by white cells and digested food. Lymph nodes "taste" the lymph for anything bad like bacteria/viruses/cancers, etc. read more