What should you know about dark spots on back and shoulders?

Marks that remain after spots, scratching, acne, or a rash can be post-inflammatory hyperpigmentation. Flat patches in sun-exposed areas may fit sun spots, while patches with fine scale or changing colour can occur with tinea versicolor. Melasma more often affects the face, but a clinician can consider it when pigmentation has a broader pattern. The shade may look more pronounced in richly pigmented skin, and the appearance alone cannot identify the cause.

Notice whether the areas are flat or raised, itchy or sore, scaly, spreading, or linked with recent products, sweating, friction, or a previous rash. Taking a clear photograph in consistent light can help show change over time.

Use a gentle, fragrance-free cleanser and moisturiser, avoid scrubbing and picking, and reduce rubbing from tight straps or rough fabrics. Protect exposed shoulders and the upper back from sunlight with clothing and broad-spectrum sunscreen. Do not apply strong lightening mixtures or unprescribed steroid creams; irritation can deepen the colour. A dermatologist may first treat an active rash or inflammation, then discuss options such as skin brightening treatment, a chemical peel, or picosecond laser treatment when appropriate for your skin tone and diagnosis.

Arrange a dermatology assessment if the marks are new and multiplying, persist despite gentle care, or come with scale, itch, pain, bleeding, crusting, or a lump. Seek prompt medical attention for a single spot that changes quickly in colour, border, or shape, or that repeatedly bleeds. These features do not identify a diagnosis by themselves, but they deserve an examination rather than cosmetic treatment.

Could this be post-inflammatory hyperpigmentation, tinea versicolor, or another cause? Do you see scale or inflammation that needs treatment first? Which ingredients or procedures suit my skin tone, and how should I protect the area afterward?