What should you know about melasma under arms?

Melasma is usually made of flat tan, brown or grey-brown patches rather than a raised growth. Underarm skin can darken after shaving, rubbing, deodorant irritation or a previous rash, so the location alone does not establish melasma. A clinician may examine the colour, borders and pattern and ask when it began, whether it changes with light exposure, and which products touch the area.

Avoid assuming that every dark patch is a pigment condition. Thickened, velvety skin in body folds may have a different explanation and deserves a medical review, especially if it is also present on the neck or elsewhere.

Use a gentle, fragrance-free cleanser and moisturiser, and pause products that sting or cause redness. Reduce close friction from tight clothing and consider shaving methods that do not repeatedly scrape the skin. Do not scrub, bleach or apply strong lightening products without guidance, because irritation can deepen pigmentation.

Arrange a dermatology assessment before choosing a procedure. Depending on the diagnosis and skin sensitivity, treatment may involve a prescribed topical plan or a carefully selected option such as Chemical Peel, Microneedling, Skin Brightening Treatment or Laser Toning. Results depend on the cause and consistent pigment protection.

Book an appointment if the patch is new, spreading, itchy, painful, scaly or repeatedly inflamed, or if it does not settle after stopping an irritating product. Seek prompt assessment for bleeding, ulceration, a firm lump or a rapidly changing single patch. These features need diagnosis rather than cosmetic treatment.

Ask whether the pattern fits melasma or post-inflammatory pigmentation, whether a medicine or deodorant could contribute, and which ingredients are suitable for underarm skin. You can also ask how long to test a treatment, what irritation should prompt a pause, and whether a procedure could worsen pigment.