An ingrown nail is caused by a corner of the nail growing into the side of the toe.  Sometimes, it is easy to clip the side of the nail and get relief.  Other times, however, this is just causing more trauma to the edge of the toe as you may have to dig deep and then realize there is a break in the skin.  That break in the skin is an entry for bacteria, which may cause a bacterial infection.  It is better to have a doctor take a look at your condition instead of digging it out yourself. This prevents infection, and will also educate you on how to prevent its occurrence in the future.