Dark spots can appear after a sunny day, a hormonal shift, or a blemish that has already healed. They form when parts of the skin produce or retain more melanin, the pigment that gives skin its color. These marks are common, but their triggers differ, so understanding the cause can help you choose sensible care. Here are three frequent reasons for hyperpigmentation and practical ways to reduce the chance of new spots forming.
Sun Exposure and UV Light
Ultraviolet (UV) light can prompt skin to make more melanin as part of its response to sun exposure. Over time, this may show up as scattered brown spots or patches on areas that get frequent sun, such as the face, hands, and chest. Existing pigmentation can also become more noticeable after time outdoors, even when the skin does not burn.
Make sun protection part of your daily routine. Use a broad-spectrum sunscreen with SPF 30 or higher on exposed skin, and reapply according to its label, especially after swimming or sweating. A wide-brimmed hat, sunglasses, and shade add useful protection. If spots change in size, shape, or color, or appear unusual, ask a health professional to assess them.
Hormonal Changes
Hormonal changes can contribute to melasma, a type of hyperpigmentation that often appears as larger, fairly even patches on the cheeks, forehead, upper lip, or jaw. It may develop during pregnancy or while using hormonal medication, though not everyone experiences it. Sun exposure can make melasma darker, so UV protection matters even when the patches seem stable.
Melasma can be persistent, and the right approach depends on your skin and health history. Avoid starting strong lightening products or prescription treatments without professional guidance, particularly during pregnancy or breastfeeding. A clinician can help identify likely triggers, review products or medications, and suggest suitable options. Be patient: pigmentation often takes time to respond, and irritation from overly aggressive treatments can make discoloration worse.
Marks After Skin Inflammation
Post-inflammatory hyperpigmentation (PIH) can follow inflammation or injury. Acne is a common trigger, but eczema, a rash, a burn, a scratch, or irritation from a product can also leave a darker mark after the skin heals. PIH is more likely to linger in deeper skin tones, and its color and duration can vary from person to person.
Try not to pick, squeeze, or scrub inflamed skin; extra irritation may deepen or prolong a mark. If acne or another skin condition keeps returning, treating the underlying problem can help prevent new spots. Introduce skincare products one at a time and stop using anything that causes persistent burning or redness. Gentle cleansing, moisturizer, and consistent sunscreen support the skin while marks gradually fade.
When to Seek Advice
Not every dark spot is caused by routine pigmentation, and a new or changing mark should not be self-diagnosed. Arrange an assessment if a spot grows, changes shape or color, has an irregular edge, bleeds, or looks different from your other marks. A clinician can examine it and advise whether further evaluation is needed.
For stable patches that bother you, a qualified skin professional can help distinguish likely causes and discuss options suited to your skin. Bring a list of skincare products and medications, and note when the spots appeared or what seems to affect them. This information can make a consultation more useful and help you avoid treatments that irritate your skin.
Sun exposure, hormonal changes, and inflammation are common reasons dark spots develop, but similar-looking marks can have different causes. Daily sun protection and gentle care are useful starting points; seek an assessment for changing or unusual spots. For tailored guidance, you can contact Spotlight Skin in Newcastle to discuss your pigmentation concerns.