It could be an infection, a vaccine response, or an autoimmune disease symptom, per experts.

Add Yahoo as a preferred source to see more of our stories on Google. A swollen lymph node can be a bit like your body's version of a red flag: When one of these bean-shaped clusters of immune cells ...

Swollen lymph nodes are often a sign that your body is fighting an infection. Autoimmune diseases can also cause lymph nodes ...

While swollen lymph nodes are a common symptom of an allergy flare-up, they’re also associated with many other conditions. Swollen lymph nodes are a common immune system response. They’re most often ...

The last time you visited your doctor for a sore throat, they may have felt for potential inflammation in your neck. That's because infections often cause swollen lymph nodes (medically known as ...

Lymph nodes are small, bean-shaped structures that are found throughout the body. According to the Cleveland Clinic, they're connected by a network of lymphatic vessels, which transport a clear fluid ...

Allergies occur when your immune system overreacts to allergens like pet dander, pollen, mold, certain foods, or medications. Allergy symptoms may include a runny nose, congestion, coughing, wheezing, ...

Armpit pain is a common complaint that can have many causes, from mild muscle injuries to swollen lymph nodes and severe skin infections. In most cases, armpit pain isn't a reason to worry, but it can ...

The lymphatic system, made up of lymphoid tissues known as nodes and vessels, is part of the human immune system. It is involved in protecting the body against infection, by delivering immune cells, ...

A swollen lymph node can be a bit like your body’s version of a red flag: When one of these bean-shaped clusters of immune cells in your neck, armpit, or groin puffs up, it’s typically an indication ...