Cracks in the corner of your mouth may be from your body becoming too acidic. Tomatos and citrus juices are high in acids and should probably be avoided til the cracks heal. Because of the duration of the problem, it almost makes me wonder if it isn't caused by a medication that you may be taking. Consult your physician and see if any of your medications will cause your body to become overly acidic. Hope this helps!
i agree with the above. also, consider what was going on with you prior to and shortly after the cracks started appearing. the more information you have, the better someone can help you get to the root of the problem.
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