There are many reasons for the enlargement of one side of the neck. If the onset is acute and accompanied by pain, it may be lymphadenitis, tuberculous lymphadenitis, or purulent infection of the soft tissue of the neck. The whole course of the disease is very short, and it will be accompanied by varying degrees of pain, fever and other conditions. You should go to the hospital in time for treatment. In particular, lymph node tuberculosis in the neck often occurs in young people, while it is rare for those over 30 years old. Tuberculosis bacilli are all due to caries in the mouth, or invasion through the tonsils. A small number of people with a history of pulmonary or bronchial tuberculosis may grow into unilateral lymph node tuberculosis, or may accumulate on both sides. At the early stage, swollen lymph nodes are formed, and they are separated from each other. They can also move without pain. There are also some chronic enlargement, which is relatively rare, such as cystic hygroma, thymic cyst, pharyngeal cyst, lymphangioma, or neck arteriovenous hemangioma.
