Symptoms of male mastitis are mainly manifested as breast pain, redness and swelling of the breast, and some patients may have localized warmth of the breast skin accompanied by pain and other phenomena. It is recommended that the patient go to the hospital for a detailed examination, improve the physical examination and breast ultrasound to further clarify the cause of the disease. Male mastitis is mainly due to the increased level of estrogen, as well as mental and emotional trauma and other causes of mastitis found. It can cause enlargement of the breast area, swelling and pain or lumps. Nipple discharge occurs, which affects the appearance and causes psychological disorders in men. If a man suffers from mastitis, it is recommended to go to a specialized hospital to improve the relevant examination to clarify the diagnosis, it is best to do breast ultrasound examination to clarify whether there is abscess formation.