Lymphangitis is an inflammation of the lymphatic vessels, which are part of the body's immune system. It often occurs as a result of an infection, typically caused by bacteria, that spreads through the lymphatic system. Symptoms may include redness, swelling, and pain along the affected area, as well as fever and chills. Treatment for lymphangitis usually involves antibiotics to combat the underlying infection. In some cases, pain relief and elevation of the affected limb may also be recommended. If left untreated, lymphangitis can lead to more serious complications, so prompt medical attention is important.