These cracks may be itchy and painful; they may form white scabs and even bleed. When angular cheilitis occurs over a long period of time, it can cause an infection.
If you have cracked lips for long periods of time, you may also experience a split lip in which one of the cracks breaks completely and begins to bleed.
While long-term treatment for this requires resolving the vitamin deficiency, more immediate treatment typically involves applying soothing ointments, like petroleum jelly, coconut oil or medicated lip balms.