What should you know about dark spots on torso?

Marks on the chest, back, abdomen, or sides may appear after acne, bites, rashes, scratching, or contact with an irritating product. Sun-exposed areas can develop pigment changes, while multiple patches with fine scale or itch may reflect a surface skin disorder. Colour can range from tan to brown or deeper shades depending on the person’s skin tone. The number of spots, their pattern, scale, and symptoms are more useful than colour alone.

Wash gently, moisturise if the skin is dry, and avoid picking or abrasive scrubs. Use sun protection on exposed skin and pause new fragranced products if the spots began after a change in cosmetics, detergent, or clothing. Take photographs in consistent lighting and note itch, scale, pain, and spread. A clinician can identify the cause before recommending a peel, cream, or other treatment. See Dark Patches On Skin for related guidance.

Arrange a clinical review if patches continue to spread, become thick or scaly, change quickly, or fail to settle after the trigger has stopped. Seek prompt care for bleeding, ulceration, marked pain, fever, or a rapidly spreading tender rash. New widespread changes after starting a medicine should also be discussed with a clinician.

Ask whether the pattern fits post-inflammatory colour, sun-related change, infection, or another condition. Ask if the skin needs a scraping or other test, which ingredients to avoid, and how to treat the underlying problem without causing further irritation.