Breast cancer does not always begin with a noticeable lump. In some cases, changes to the skin of the breast may be among the first warning signs. Recognising these changes and seeking medical advice can help ensure timely evaluation.
Possible warning signs include persistent redness or discoloration, swelling, warmth, a rash that does not improve, skin dimpling or a texture resembling an orange peel. A nipple that newly turns inward can also be a symptom. These changes often have non-cancerous causes, but new or persistent symptoms should be assessed by a healthcare professional.
Inflammatory breast cancer (IBC) is a rare but aggressive form of the disease. It accounts for around 1% to 5% of breast cancer cases, according to the American Cancer Society. Unlike many other types, IBC may not cause a distinct lump and can sometimes resemble a breast infection or an eczema-like rash. Symptoms that do not improve with treatment require further medical evaluation.
Breast cancer treatments can also affect the skin, hair and nails. Radiation therapy may cause redness, itching, swelling, darkening and irritation similar to sunburn. In more severe cases, the skin may peel or develop fluid leakage.
Dermatologists can work with the oncology team to help manage these side effects. Patients undergoing radiation may be advised to use gentle, fragrance-free skincare products and moisturise the treated area according to their care team's instructions. Severe or worsening reactions should be reported promptly.
Not every skin change indicates breast cancer, and symptoms alone cannot confirm a diagnosis. However, a new breast rash, persistent swelling, skin dimpling or nipple changes should not be ignored, particularly when they affect one breast or fail to improve.
Seeking prompt medical assessment is important because some breast cancers can progress quickly. A clinician can determine whether further examination, imaging or a biopsy is needed.

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