Women with bumps under the armpit will hurt when pressed. Usually the causes of this situation may include lymphadenitis, skin inflammation, parasthesia, breast cancer axillary lymph node metastasis, etc. The corresponding measures can be taken in accordance with medical advice, including doing relevant examinations and using drugs for treatment. Common causes and treatments 1, lymphadenitis: lymphadenitis can be divided into acute and chronic. Acute lymphadenitis is mostly seen in trauma and can be characterized by acute inflammation such as redness, swelling, heat and pain under the armpit, and patients are advised to take antibiotics such as amoxicillin and clarithromycin as prescribed by the doctor. And chronic lymphadenitis is mostly seen in malnutrition or other chronic diseases, patients are often asymptomatic, lymph nodes can shrink or subside on their own; 2, skin inflammation: poor hygiene habits or infected bacteria can induce skin inflammation, foreign bodies in the armpit may be oil secretion, hair follicle blockage caused by skin inflammation, such as folliculitis, boils, patients can local topical drugs, oral anti-inflammatory drugs and other control of infection; 3, parametrial: parametrial The parametrial breast is mainly in the armpit, and the lymph nodes in the armpit are rich, so the hard lump of parametrial breast should pay attention to the differential diagnosis with the enlarged lymph nodes. When the parametrium is large and affects the beauty, it can be removed surgically; 4. Breast cancer axillary lymph node metastasis: breast cancer often shows breast lumps and axillary lymph node metastasis which makes local lymph node enlargement. Most of them require a puncture biopsy or excisional biopsy to determine the nature of the lymph nodes and decide whether to remove them. As there are many reasons for the painful pressure on the lumps under the armpit, it is recommended that the patient should go to the hospital for ultrasound examination to identify the cause and then seek targeted treatment.