The symptoms of breast cancer include unusual lumps in the breasts, swelling in the armpits, itchy nipples, stubborn rashes or painful breasts. However, all of these symptoms can also be the sign of nothing serious. In fact, most of the time breast issues like these are not a sign of cancer. Nevertheless, it is important to track any changes and based on the exact nature of the symptoms decide when it is okay to wait and when you should see a doctor.