Diffuse pigmentation includes physiologic pigmentation, pigmented hairy tongue, and medication-induced pigmentation
doi: 10.1158/1078-0432.CCR-06-2965 95 NomiyamaTKawanamiTIrieSHamaguchiYTerawakiYMuraseKet al
Key Takeaways White spots on skin after sun exposure are primarily caused by idiopathic guttate hypomelanosis (IGH), a harmless condition resulting from melanocyte damage due to cumulative UV exposure over many years These spots typically appear on sun-exposed areas like forearms, lower legs, upper arms, chest, and face, and become more noticeable when surrounding skin tans Treatment options include tretinoin cream, chemical peels, cryotherapy, and laser therapy, though results vary and prevention is more effective than treatment Daily application of broad-spectrum SPF 30-50+ sunscreen is the most effective prevention strategy, along with protective clothing and avoiding peak sun hours While IGH spots are harmless, any new or changing skin spots should be evaluated by a healthcare professional to rule out other conditions What Are White Spots on Skin After Sun Exposure

These areas have enough fat tissue, making them ideal for subcutaneous injections, ensuring that the medication is absorbed slowly and evenly into your bloodstream