Sun spots on legs: what to know

Sun spots, also called solar lentigines, can occur on skin that has received repeated ultraviolet exposure, including exposed lower legs. They are generally smooth rather than scaly and may sit beside freckles or other forms of uneven tone. A photograph can help you track a mark, but it cannot establish the diagnosis; a clinician may inspect colour, border, surface and change over time.

A new dark patch can have causes other than sun spots. Compare it with nearby skin and note when you first noticed it, whether it itches or bleeds, and whether it is becoming raised. See more about [Sun-Damaged Skin](/conditions/photoaging/) and [Dark Patches On Skin](/symptoms/dark-patches-on-skin/).

Protect the legs when they are exposed: use broad-spectrum sunscreen as directed on the product, reapply after swimming or heavy sweating, and add clothing or shade. Avoid picking, scrubbing, or using unprescribed lightening products, since irritation can deepen pigmentation.

If the appearance bothers you, a dermatologist can confirm the diagnosis and discuss options such as [IPL Photofacial](/treatments/laser-and-energy/ipl-photofacial/), [Picosecond Laser Treatment](/treatments/laser-and-energy/picosecond-laser-treatment/), [Chemical Peel](/treatments/aesthetic-procedures/chemical-peel/), or [Cryotherapy (Lesion Removal)](/treatments/surgical-dermatology/cryotherapy-lesion-removal/). Suitability depends on the mark, skin tone, healing history and risk of post-treatment pigment change.

Arrange a dermatology review for a spot that is new and unlike the others, changes in size, shape or colour, develops several shades, becomes scaly or crusted, bleeds, hurts, or fails to heal. Prompt assessment is sensible when a mark changes quickly. Do not rely on a cosmetic treatment until an unusual lesion has been examined.

Ask whether the mark fits a sun spot, whether it needs dermoscopic examination, what warning changes to monitor, and which treatment is safest for your skin tone. You can also ask how sun protection should be adjusted for outdoor activities and how long treated skin may remain sensitive.