Early detection of breast cancer can increase the success of treatment, so knowing what the signs and symptoms are is important. These can include a permanent lump in the breast that feels hard or tender and that might feel like it’s attached to the skin or chest wall, a lump in the armpit, visible changes such as dimpling, puckering, or thickening of the skin of the breast, redness or swelling in the breast, visible changes to the nipple, or itchiness of the nipple or breast. While these don’t necessarily indicate cancer, speak to your doctor if these symptoms do occur.