What should you know about paradoxical hyperpigmentation?

Hyperpigmentation occurs when skin produces or retains more melanin in an area. In paradoxical hyperpigmentation, the darkening is an unwanted response to a trigger such as heat, inflammation, a burn, or a treatment that was intended to improve uneven colour. It may appear as brown, grey-brown, or darker patches and can be more noticeable after the original irritation settles.

The cause matters. A clinician will ask about recent peels, lasers, sun exposure, rashes, medicines, and product use, then assess the colour and texture. Dark patches can have several explanations, so a treatment plan should follow an examination rather than simply repeating the procedure that preceded the change.

Pause irritating products and avoid picking, rubbing, or adding a new bleaching agent without advice. Use broad-spectrum sun protection that you tolerate, cover the area when practical, and keep the routine gentle. Photograph the patch in consistent lighting so gradual change is easier to discuss at review.

Depending on the cause and skin type, a dermatologist may consider hydroquinone treatment, a skin brightening treatment, a chemical peel, IPL photofacial, or picosecond laser treatment. These options can themselves irritate skin, so settings, preparation, aftercare, and spacing between treatments need individual planning.

Arrange prompt review if darkening follows blistering, significant pain, swelling, or a procedure complication, or if the patch changes quickly, bleeds, crusts, or develops a new lump. Urgent care is appropriate for severe swelling, widespread blistering, or signs of infection such as pus and fever.

Ask what likely triggered the pigment change, whether treatment should be paused, how sun exposure will be managed, and what outcome is realistic for your skin. Before a procedure, ask about a test area, aftercare, flare signs, and the plan if the colour becomes darker again.