What causes the lymph nodes to swell?

Lymph nodes can be found throughout your body and at times can become swollen. Some of the causes of swollen lymph nodes include an ear infection, strep throat, and mononucleosis. Learn how to detect your swollen lymph nodes and how to talk to your doctor. Treatment will depend on a diagnosis since causes may vary. read more

Swollen lymph nodes behind the ear: Swollen lymph nodes behind the ear may correspond to an infection around the scalp or possibly an eye (conjunctival) infection. The most common cause of swollen scalp lymph nodes are skin conditions affecting the scalp, such as dandruff (seborrheic dermatitis); or an abscess, or soft tissue infection. read more