One of the subtle signs of breast cancer is a change in the skin texture on the breast, which can look like dimpling or puckering. This is sometimes described as resembling the skin of an orange. These changes happen when cancer cells block lymph vessels under the skin, causing swelling and thickening. The skin may look tight, rough, or have small dents. Because these changes can be mistaken for skin conditions like eczema, they are often overlooked