Breast dimpling without a lump: what to know

Dimpling may follow local inflammation, an injury, previous surgery, or tissue pulling beneath the skin. Breast cancer can also present with skin dimpling without an obvious palpable lump, so appearance alone cannot identify the cause.

A dimple forms when skin is pulled inward or when swelling changes the contour around it. Notice whether it is visible at rest or only when you lift an arm or tighten the chest muscles. Also check for redness, warmth, thickened skin, a change in breast shape, nipple inversion, nipple discharge, or swelling in the armpit. These details help a clinician decide which examination or imaging is appropriate.

Arrange a clinical breast examination for a new, unexplained, or persistent dimple. Record when you first noticed it and whether it changes with movement or your menstrual cycle. A private photograph taken in consistent lighting can help you track visible change, but repeated pressing or pinching may irritate the area and does not rule a condition in or out. Tell the clinician about recent injury, infection, breast procedures, pregnancy, breastfeeding, and any other breast or nipple changes.

Seek prompt medical care if dimpling is new and spreading, or occurs with marked redness, warmth, swelling, fever, severe pain, bloody nipple discharge, sudden nipple inversion, or skin that becomes thick and pitted. These features need timely assessment for inflammation, infection, or another underlying breast change. Do not wait for a lump to appear before arranging care.

Ask what the examination suggests, whether breast imaging is needed, and which type fits your age and circumstances. You can also ask what changes should trigger an earlier return, how soon to follow up if the dimple remains, and whether previous surgery or inflammation could explain the skin tethering.