Thanks for your question on Health Care Magic. I can understand your concern. By your history and description, in my opinion, you are mostly having multiple neurofibromas. They are tiny lumps originating from nerves. This is the reason for pain on rubbing. Usually no treatment is required. But if you feel very annoying then first get done ultrasound examination of local part to know the extent of lumps. Surgical removal is usually indicated to remove them. Hope I have solved your query. Wish you good health. Thanks.