Underarm lymph nodes that come and go are usually the result of an inflammatory condition in the armpit that has not been completely controlled. In most cases, large and small lymph nodes in the armpit are indicative of chronic inflammation in the area where the lymph nodes are located. When the inflammation is under control, the lymph nodes become smaller, but when the inflammation continues to worsen, the lymph nodes can have an increase in size. This is usually related to the patient’s irregular use of medication and incomplete treatment. Although tumor metastasis can also cause lymph nodes to increase in size, but after the lymph nodes are enlarged, they usually won’t become smaller easily, so most of the cases are still considered to be local inflammatory reaction. It is recommended that patients with chronic lymphadenitis follow the doctor’s instructions to take medication regularly, do not feel that the symptoms have been reduced and then arbitrarily stop taking medication, which will easily cause the symptoms to recur, and will prolong the healing time. During the treatment period, we should pay attention to the diet as light as possible, do not eat spicy and stimulating food, so as not to cause inflammation reaction aggravated.