At its earliest stages, signs of breast cancer may not be apparent during a breast self-examination, clinical breast exam or on mammography. As it grows, over a period of months and sometimes several years, breast cancer can cause several outward symptoms that can be noticed. Anyone (male or female) experiencing any of these symptoms should seek advice from a qualified physician. These symptoms may include:

• Rash on the skin of the breast, areola or nipple that makes it appear scaly, red or swollen
• Ridges, pitting or dimpling of the breast
• Fluid from nipples (discharge), especially containing blood
• A lump or thickening in the breast
• A lump in the underarm area
• Nipple tenderness
• A change in the size or shape of the breast
• A nipple partially or completely retracted inward (into the breast)

As the undetected breast cancer progresses, the symptoms may become more noticeable. The cancer may start with cells that have not yet formed a lump. As the cancer progresses, the tumor will grow and the lump may be felt (palpable) by the individual or a physician. In addition, the lymph nodes may become enlarged indicating possible spreading of the cancer.

In the majority of breast cancer diagnoses, there is no pain associated with the development of breast cancer. Some individuals, however, have reported pain around the lump in the breast. If  a woman is experiencing a persistent or unexplained painful area of the breast regardless if a lump is present, she should consult a physician.