There are many reasons for right breast pain, such as breast hyperplasia, breast inflammation, breast malignancy, herpes zoster, rib fasciitis, etc. A few may be caused by lesions in the chest or mediastinum, and need to go to the hospital for specialist examination to clarify the causes of breast pain, and then treat the symptoms. 1. Breast hyperplasia: Before the onset of menstruation, breast hyperplasia is more obvious, and the breast is affected by the secretion of estrogen by the ovaries. The impact of the ovarian secretion of estrogen, breast gland enlargement, may press or stimulate the mammary nerve cause pain. The most important thing is to make sure that you don’t overstimulate your breasts, use underwear to support your breasts, and pay attention to your diet and rest routine; 2. Acute mastitis patients are mostly breastfeeding women or have suffered breast trauma, breast pain can be stabbing pain, when the affected side is the right side, manifested as pressure pain in the right breast, accompanied by redness, swelling, heat, painful inflammatory manifestations, abscess formation will appear fluctuating sensation, need to promptly unblock the milk ducts, discharge the accumulation of milk. If it is benign, observation and treatment with broad-spectrum antibiotics, triamcinolone and glucocorticoids will be taken, while malignant treatment requires surgery. 3. Malignant tumor of breast: Generally, malignant tumor of breast is a painless lump, but when breast cancer invades lymphatic duct or skin, when the affected side is the right side, it shows intermittent stabbing pain in the right breast, and treatment is decided according to pathological test results. 4. Herpes zoster: it can mostly be accompanied by the phenomenon of skin clusters of blisters, which is generally treated with antiviral drugs such as acyclovir, valacyclovir or famciclovir; 5. Rib fasciitis: although there is no obvious lump in the breast, but there is deep rib pressure pain, the presence of rib fasciitis is considered, and it is generally recommended to visit the thoracic surgery department for examination to clarify the cause, and to be guided by the doctor to take oral ibuprofen or other drugs to relieve pain and control inflammation. If there is stabbing pain in the breast, then you need to pay attention to maintaining emotional stability in your life, avoiding excessive mood swings, and eating less spicy and stimulating foods, such as ginger and chili peppers. If the lesion is in the thoracic cavity or mediastinum, you need to visit the thoracic surgery department to find the cause and give targeted treatment.