I am a 24 year-old female with a fairly good medical history. For several months I have had a large (as in larger than acne) lump on the left side of the bridge of my nose, by my eye. It s where my sunglasses might hug the ridge of my nose, but on the side towards my eye. The lump is hard and only hurts when I apply pressure. It is pink. Although I have had it for several months, it has regressed in size several times--only to get large again. Sometimes the skin over it gets dry and flaky, but it never actually goes away. The smallest it ever was was two weeks ago, when it turned into a small, hard, little white ish dot. It got bigger three days ago and is now sore again when I touch it. What is it?