Nerve root aggregation is nerve root adhesion. Nerve root aggregation in children is usually caused by aseptic inflammation, prolonged local ischemia, and congenital developmental abnormalities. 1. Aseptic inflammation: aseptic inflammation is an inflammatory reaction not caused by pathogenic microorganisms, usually caused by sprains, collisions, etc., which usually results in redness, swelling and itching of the skin, and may also result in the formation of exudate and secretion, which will lead to the development of nerve root adhesions in children with the passage of time. 2. Prolonged local ischemia: Prolonged local ischemia is usually caused by circulatory obstruction, vascular malformation, etc., which usually results in chest tightness, nausea, etc., and may also lead to atrophy and softening of the nerve roots, thus triggering nerve root aggregation in children. 3. Congenital developmental abnormality: If the child’s nerve root development is abnormal, it may also lead to nerve root clustering. Parents are advised to take their children to the hospital in time, clarify the cause of the disease with the help of doctors and carry out standardized treatment.