Rapid, unusual increase in breast sizeRedness, rash, blotchiness or other skin color changes on the breastPersistent itching of breast or nippleLump or thickening of breast tissueStabbing pain and/or soreness of breastFeverish breastSwelling of lymph nodes under the arm or above the collarboneDimpling or ridging of breastFlattening or retraction of nippleNipple discharge or change in pigmented area around nippleAlthough the above symptoms may indicate a benign breast disorder, any change to your breast(s) should be reported to your doctor immediately. In addition, these symptoms may appear quickly and suddenly.