Pregnancy hyperpigmentation: what to know

Hormonal changes can stimulate pigment-producing cells. Darkening may appear on the nipples, areolae, genital skin, scars, and the midline of the abdomen. Patchy facial colour, often called melasma, can be more noticeable after sunlight or visible-light exposure. Existing freckles and marks may also look deeper. The pattern is usually gradual rather than a sudden inflamed rash.

A new dark mark still deserves attention if it changes quickly, bleeds, crusts, becomes painful, or looks distinctly different from nearby marks. A clinician can examine uncertainty rather than assuming every change is pregnancy pigment.

Use broad-spectrum sunscreen suitable for sensitive skin, seek shade, and add a hat when outdoors. Reapply according to the product directions, especially after sweating or washing. Keep cleansing and moisturising gentle, avoid picking or irritating scrubs, and stop products that sting. Do not begin hydroquinone, a chemical peel, IPL photofacial, or picosecond laser treatment during pregnancy without explicit advice from a qualified clinician. Treatment planning can take account of breastfeeding, skin tone, and whether pigment is still changing.

Arrange a medical review for a rapidly changing, bleeding, crusted, ulcerated, very itchy, or painful pigmented spot. Seek care sooner if darkening comes with widespread rash, facial swelling, yellowing of the skin or eyes, or feeling significantly unwell. Otherwise, mention new or bothersome pigment at a routine antenatal or dermatology visit.

Ask whether the pattern fits melasma or another diagnosis, which sunscreen and active ingredients suit your skin, and when an aesthetic procedure or skin brightening treatment could be reconsidered.