Lymphadenitis is a benign disease that is caused by the invasion of pathogenic bacteria through the skin, mucous membranes or surrounding lesions, resulting in inflammatory disease of the lymph nodes in the area. It is mainly found in the neck, armpits and groin area, and patients may present with swollen and painful lymph nodes and, in severe cases, fever and other systemic reactions. 1. Non-specific lymphadenitis: acute and chronic inflammation of the lymphatic drainage area, including acute non-specific lymphadenitis and chronic non-specific lymphadenitis. The former usually has an acute onset and patients mainly show symptoms such as local redness, swelling, heat and pain, and the lymph nodes are relatively soft, while the latter is often transformed from the former and has a longer duration and can recur; 2. Atopic lymphadenitis: inflammation of lymph nodes caused by specific pathogenic microorganisms, such as fungal infections, local or generalized lymph nodes can appear to varying degrees of enlargement, often first invading the skin, mucous membranes The corresponding clinical manifestations of fungal disease appear. Lymphadenitis caused by tuberculosis infection is often manifested as cold abscess, without obvious redness and high skin temperature, and may have systemic symptoms such as low fever, night sweats and fatigue. If a patient has the above symptoms, he or she needs to visit a hospital, where the pathogen can be determined by blood routine, pathogenic bacteria culture, etc. Imaging examinations such as X-ray, CT and ultrasound can also be applied to help find the primary lesion, and if necessary, lymph node aspiration biopsy is feasible to clarify the cause. If diagnosed, patients can undergo targeted treatment under the guidance of professional doctors. If the disease is caused by bacterial infection, antibiotics such as cefadroxil and sodium penicillin can be applied as prescribed by the doctor, and antipyretic and analgesic drugs such as ibuprofen and aspirin can also be applied to relieve the discomfort. In daily life, patients are advised to exercise properly and maintain a good mood to promote recovery. Pay attention to skin hygiene and avoid scratching and rubbing if a sclerite appears on the affected area to avoid it from breaking down and causing infection.