Cervical lymphadenitis is divided into acute cervical lymphadenitis and chronic cervical lymphadenitis. Acute cervical lymphadenitis is commonly seen in children and is mostly caused by inflammatory conditions such as upper respiratory tract infection, tonsillitis, dental caries, pharyngitis, stomatitis, and otitis externa, which cause cervical lymph node infection through the lymphatic drainage route. The pathogenic bacteria are mainly Staphylococcus aureus and Streptococcus haemolyticus. Chronic lymphadenitis is often caused by incomplete treatment of acute lymphadenitis, failure to remove the primary focus or poor body resistance. The cause is caused by some acute and chronic inflammation of organs in the lymphatic drainage area, such as purulent tonsillitis and gingivitis. Clinical manifestations 1. Systemic symptoms Acute lymphadenitis often includes chills, fever, malaise, general malaise and loss of appetite. Symptoms of primary infection lesions may include sore throat, painful swallowing, sore throat, cough, toothache, etc. 3.Local symptoms Lymph nodes in the neck are enlarged unilaterally or bilaterally, with pressure pain, medium quality, smooth surface and movable. The number and size of the enlarged lymph nodes vary, mostly from the size of a fava bean to a thumb. Acute lymphadenitis often has localized redness, swelling, fever, and pain. The symptoms of chronic lymphadenitis are the same as those of acute lymphadenitis during an acute attack. The lymph nodes shrink after anti-infective treatment but are still palpable, movable, and non-pressurized. Examination White blood cell count neutrophils are elevated. Ultrasound examination of the neck helps to understand the location, size, number of lymph nodes and the relationship with surrounding tissues. Diagnosis Enlarged lymph nodes in the neck with pressure pain, acute inflammation of organs within the lymphatic drainage area, and generalized chills and fever may be present. And combined with laboratory tests can make the diagnosis. Differential diagnosis The disease should be differentiated from cervical lymph node tuberculosis, malignant lymphoma, and metastatic malignant tumor. Lymph node puncture or excisional biopsy should be performed if necessary. Treatment Treatment of the primary infected lesion, anti-infection, strengthening nutrition, enhancing body resistance, etc.