I've observed white Patches on my testicles skin. It's about an inch in size. Sometimes it itches. I've been using anti-fungal powder to keep this area moisture free.
-It sounds like you might be dealing with a fungal infection or irritation. Keep the area clean and dry, but if the white patch persists or worsens, it’s best to see a doctor for a proper diagnosis and treatment. Avoid further scratching to prevent irritation.