When should you see a doctor about uneven skin tone?

Darker or lighter areas may appear after sun exposure, acne, eczema, a burn, or another irritation. Common explanations include melasma, sun-damaged skin, and post-inflammatory hyperpigmentation, but the appearance alone cannot identify the cause. A clinician can examine the pattern, borders, texture, and location, then decide whether testing or monitoring is useful.

Arrange a routine review when the colour difference remains despite gentle care, repeatedly returns, or affects your confidence. A new dark mark with an irregular outline or noticeable evolution deserves assessment rather than cosmetic treatment first.

Take clear photographs in consistent lighting and note when the change began, where it started, and whether products, medicines, pregnancy, hormonal treatment, or sun exposure preceded it. Use broad-spectrum sun protection, avoid picking or scrubbing, and pause products that sting. Do not apply a strong bleaching product to an undiagnosed patch.

Bring the product names or photographs of anything used on the area. Depending on the cause, a dermatologist may discuss options such as a chemical peel, skin brightening treatment, IPL photofacial, or picosecond laser treatment after assessing your skin and the risk of further pigment change.

Seek prompt medical advice for a pigmented area that bleeds, crusts, becomes painful, develops a firm lump, or changes in colour, shape, or size. Also arrange earlier review if pigment change follows a severe reaction, involves the eyes or mouth, or comes with facial swelling or breathing difficulty; breathing difficulty or rapidly worsening swelling needs emergency care.

Ask what pattern the change follows, whether it fits melasma, sun-damaged skin, or post-inflammatory hyperpigmentation, and whether any examination or follow-up is needed. You can also ask which ingredients to avoid, how to protect the area from sunlight, and whether a procedure is appropriate for your skin type.