Small white spots appearing on your arms after 40 are likely idiopathic guttate hypomelanosis—a harmless condition affecting 50-80% of people in this age group. Caused by long-term sun exposure damaging melanin-producing cells, these spots pose no health risk. While no permanent cure exists, understanding what they are can help ease concerns about your skin’s natural aging process.

Those small white patches that gradually appear on your arms…


