Our expert says:
Deep cracks in the tongue can be caused by a wide variety of conditions (e.g. glossitis, Candida infections, dermatological conditions, etc), and in some cases by a vitamin B deficiency. I would recommend that your daughter should consult a Dermatologist so that her condition can be diagnosed and she can obtain the appropriate treatment. If this conditions is due to a vitamin B deficiency, then the dr will prescribed vitamin B complex as the B vitamins work best when used together.
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