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From Biology-Online Dictionary | Biology-Online Dictionary
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A lesion characterized by cracks or splits at the labial commissure (the corner of the mouth) often bilaterally (on both sides) which may also be accompanied by scaling and cracks of the lips.


The lesions may bleed Link titlewhen the mouth is widely opened. The cause may be a fungal infection (e.g. Candida albicans infection) or vitamin B deficiency.