What causes sores in my nostrils. it's like something is eating away the skin in my nose. help! ?

Be Seen!: You need a thorough physical exam by an ent. It might be something simple as a cellulitis or a complicated as an aggressive lymphoma which can cause destruction of the septum. But only a physical exam and biopsy( if necessary) will determine the cause of your symptoms. While you are waiting to be seen start with applying neosporin to your nose three times a day. But please be seen.