What should you know about neck pigmentation?

Pigment can increase after irritation, eczema, acne-like inflammation, sun exposure, or contact with a product. Acanthosis nigricans is another possibility, especially when the area feels thicker or velvety and similar changes appear in other folds. Colour may range from tan to deep brown or grey, and the shade alone does not identify the cause. Your clinician will consider texture, scale, itch, speed of onset, medicines, family history, and any general symptoms before recommending tests or treatment.

Use a gentle cleanser, fragrance-free moisturiser, and broad-spectrum sun protection on the neck when it is exposed. Stop newly introduced products that sting or cause redness, but keep a record of them for your appointment. Do not use abrasive scrubs or home acids on irritated skin. Once the diagnosis is clear, options may include a prescribed topical retinoid or a professionally selected chemical peel or laser toning session. These treatments can themselves irritate skin, so suitability depends on tone, sensitivity, and the reason for the pigmentation.

Have persistent pigmentation examined if it is spreading, becoming raised or thick, very itchy, painful, scaly, or associated with sores. Seek prompt advice for sudden widespread change or pigmentation accompanied by feeling unwell. A new mark that changes deserves a proper look even when it seems cosmetic.

What type of pigmentation is this? Is there inflammation or thickening beneath the colour? Do I need any health checks? Which ingredient or procedure is least likely to irritate my skin?