I suffer trigeminal neuralgia along with migraines and cluster headaches, and now they reckon this scrotal pain is a form of neuralgia, neuralgia of the ilioinguinal nerve type thing.
Research shows cutting nerves is the way to go when tackling neuralgia, especially when a patients quality of life is suffering to the point of becoming housebound as walking is too painful.
This sounds really pervy, but if I were to walk around naked and not wear clothing, then I would be pretty much pain free. It's when I get dressed and wear briefs/boxers, jeans/trousers is when the pain gets triggered, there is a part of the scrotum that gets triggered by touch.