Some adults and virtually all children accumulate fluids in the eustachian tube, the passage between the throat and middle ear. The fluid is a perfect medium for viruses and bacteria, which can cause otitis media, an infection or inflammation of the middle ear. Many studies have shown that chiropractic can relieve and prevent ear infections without antibiotics. The treatments, which include chiropractic adjustment and massage of the lymph nodes along the neck and around the ear, help drain excess fluid. The adjustment helps regulate the nervous system, which in turn drains the eustachian tube and promotes long-term drainage.