It can occur as a result of an injury that causes an area of broken skin. Cellulitis may cause nearby lymph nodes to swell. For example, an infection in the arm may cause the lymph nodes in the ...

Discover how allergies can cause swollen lymph nodes, and learn to distinguish between normal immune responses and warning signs that require medical attention.

When the lymph nodes detect harmful substances like bacteria, they react and become swollen. Several bacterial infections may ...