• A lump or thickening in an area of the breast
• A change in the shape of the nipple, particularly if it turns in, sinks into the breast, or has an irregular shape
• A blood stained discharge from the nipple
• A rash on a nipple or surrounding area
• A swelling or lump in the armpit
• Nipple tenderness or a lump or thickening in or near the breast or underarm area
• A change in the skin texture or an enlargement of pores in the skin of the breast (some describe this as similar to an orange peel's texture)
• Any unexplained change in the size or shape of the breast
• Dimpling anywhere on the breast
• Unexplained swelling of the breast (especially if on one side only)
• Unexplained shrinkage of the breast (especially if on one side only)
• Recent asymmetry of the breasts (Although it is common for women to have one breast that is slightly larger than the other, if the onset of asymmetry is recent, it should be checked.)
• Nipple that is turned slightly inward or inverted