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A member asked:
Which deficiency causes the corner of your mouth crack?
A doctor has provided 1 answer
Rarely Vitamin C: Could be a variety causes including yeast infection or significant change in the way your teeth meet (occlusion) so that you close down further thereby irritating the corners of your mouth. See a dentist first. If it's just dry, irritated skin, you could try a;d ointment consistently used daily for 2 weeks can heal these irritations.
Answered 2/12/2014
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