I have 3 small, white seed warts, 2in the corner of my lip, one in the middle. the 2 have been "with me for about 18 months, the middle one only about 6 months. They are slowly getting larger and more noticeable. How can I remove them and stop reoccurance? (I am 68, weight 92lbs, always have. No major changes in health) What may have caused this onset?