What Should You Know About UV Spots on Skin?

A flat tan, brown, or grey mark may be a freckle or sun spot, especially on areas that receive daylight such as the face, hands, shoulders, chest, and forearms. UV exposure can make existing pigmentation stand out and can contribute to uneven skin tone over time. These marks are different from pimples: pimples are raised or inflamed bumps caused by blocked or irritated follicles. A spot can also be a post-inflammatory mark left after acne, folliculitis, or another rash, with sunlight making the colour linger.

Appearance alone cannot confirm the cause. A clinician considers the mark’s border, colour, surface, size, location, and whether it has changed, then decides whether examination or a closer skin assessment is needed.

Reduce further UV exposure by seeking shade, wearing closely woven clothing and a broad-brimmed hat, and using broad-spectrum sunscreen as directed on exposed skin. Reapply it after swimming, sweating, or towel drying. Avoid picking, scrubbing, or using strong lightening products on an undiagnosed mark, because irritation can deepen pigmentation and make its borders harder to judge.

Take a clear photograph in good light and note when you first noticed the spot. Compare it periodically without repeatedly rubbing or measuring the skin. If the mark is new, bothersome, or not settling, arrange a dermatology review. Treatment depends on the diagnosis; options may include prescription creams or carefully selected procedures, rather than a single approach for every dark mark.

Book a prompt appointment if a spot changes in shape, colour, border, or surface, becomes noticeably larger, repeatedly crusts, bleeds, hurts, or itches, or does not heal. Seek medical advice sooner when several colours appear in one mark or when a new mark looks clearly different from the others. A dermatologist can distinguish sun-related pigmentation from an inflamed lesion, infection, or a skin growth that needs further evaluation.

Ask what features make the mark look like sun-related pigmentation, whether it needs monitoring or testing, and which sunscreen and treatment choices suit your skin. Mention recent sun exposure, tanning devices, new medicines, previous rashes, and any history of skin cancer in your family.