What should you know about white hypopigmented spots?

A spot may follow inflammation, irritation, a healed rash, or an injury, when pigment production temporarily changes. Some lighter patches have fine scale or a different texture; others are smooth. Note whether they are spreading, sharply bordered, itchy, scaly, or associated with pimples. Acne, folliculitis, and contact irritation can leave colour changes after the active problem settles, while a persistent or expanding patch needs clinical assessment.

Compare the area in consistent daylight rather than judging it after tanning, because surrounding skin can darken and make a lighter mark stand out.

Use gentle, fragrance-free cleansing and moisturising, and protect exposed skin from sun so contrast does not increase. Do not scrub, bleach, or apply a steroid or lightening product without advice. Take dated photographs and note new cosmetics, shaving products, medicines, rashes, or pimples near the area. A clinician can examine the surface and decide whether treatment or observation fits.

Book an appointment if spots continue to enlarge, multiply, recur, become scaly or inflamed, or affect hair or nails. Seek earlier review for pain, oozing, bleeding, marked swelling, or a rapidly changing lesion. Urgent care is appropriate for severe facial swelling, breathing difficulty, or a widespread reaction after a new product or medicine.

Is this a pigment change after inflammation or another skin condition? Does the texture suggest infection or dermatitis? Should I stop a product? What signs should I photograph or report?