Welcome to Connect, @tuco77. From the small photo, I can see the areas on your leg that you’re concerned about. Because members in the forum aren’t able to offer a diagnosis, I really think a trip to visit your primary care doctor or a dermatologist would be a good place to start.
What might be helpful when you visit is to have some notes handy about when this first started. Do the areas itch? Do they hurt or burn? What are treatment options?
Have you talked to your doctor or dermatologist about your legs?