The neck armpit grains are commonly caused by the following reasons: first, skin redundancy generation, some patients will have skin redundancy, which is not too worried, as long as it is not rapidly increasing, or there is obvious redness and pain, regular observation can be. Second, lipoma, often due to abnormal distribution of fat particles or fat hyperplasia, such as lipoma is small regular observation can be, if the lipoma appears obvious pain or rapid increase, you need to promptly perform surgery, usually need to appropriate more intake of vitamin and fiber-rich food, and increase exercise, reduce the intake of high-fat food such as red meat, fatty intestines, squid. Third, fibroids, a benign mass, generally slow-growing, no obvious pain, generally do not need special treatment. Fourth, sebaceous cyst, which is a kind of hair follicle infection caused by the need to perform surgery to get the root of the cure. In short, if the swelling persists, you need to go to the hospital in time to clarify the cause.