What should you know about white sun spots on shoulders?

The phrase white sun spots describes appearance rather than one diagnosis. Spots may be sharply or softly outlined, flat or scaly, and isolated or numerous. Sun exposure can make surrounding skin darker, making lighter areas stand out. A previous rash, irritation, or minor injury can leave a temporary lighter mark. Scaling, itch, gradual spread, or colour change elsewhere can point toward a different cause. Dark sun spots are a separate pigment pattern, so pale lesions should not automatically be labelled as Sun Spots or Sun-Damaged Skin.

Use broad-spectrum sunscreen on exposed shoulders, cover the area with clothing, and avoid tanning while the cause is unclear. Do not apply bleaching products, strong exfoliants, or steroid creams without advice. Note when the spots appeared, whether they itch or flake, and whether they change after sun exposure. Photographing the area in consistent light can help a clinician compare it later. Treatment depends on the diagnosis and may include observation or a supervised procedure.

Book a skin assessment if spots are spreading, scaly, itchy, inflamed, or persistent, or if new areas are appearing. Seek prompt review for a spot that bleeds, crusts, becomes sore, develops an irregular border, or changes quickly. A clinician may use magnification or a skin sample when the appearance is not clear.

Ask what features distinguish pigment loss from a fungal or inflammatory rash, whether testing is useful, and whether treatment is needed. If a cosmetic procedure is discussed, ask about expected colour change, sun precautions, and the risk of temporary irritation or uneven pigmentation.