Occasionally there may be a lumpy, slow-growing or sometimes fast-growing tumor under the skin. Most of the time they are soft, mobile lesions and do not cause symptoms. But others are hard, non-mobile and present symptoms and pain. In a very general way the main causes of these lumps are: Lipoma Sebaceous cyst Tumors of … Continue reading What is it and what should I do if I have a lump or tumor under the skin?