Yes, stress can cause lymph nodes to swell. The lymphatic system is part of the body's immune system, and it helps to fight infection and protect against disease. When the body is under stress, it produces hormones, such as cortisol, which can increase inflammation and cause the lymph nodes to swell. This is a normal reaction and is usually nothing to worry about. However, if the swelling persists or is accompanied by other symptoms, such as fever, it could be a sign of a more serious medical condition that should be checked out by a doctor.
In addition to stress, swollen lymph nodes can be caused by other factors, such as infection or an autoimmune disorder. Viral or bacterial infections, such as the common cold, mononucleosis, and HIV, can cause swollen lymph nodes. Autoimmune disorders, such as lupus and rheumatoid arthritis, can also lead to enlarged lymph nodes.
If your lymph nodes are swollen, it is important to talk to your doctor to determine the cause. Your doctor may recommend a physical exam, blood tests, imaging tests, or a biopsy to help diagnose the underlying problem. Treatment for swollen lymph nodes may involve antibiotics, anti-inflammatory medications, or other medications, depending on the underlying cause.