What if there's a little white spot at the corner of your mouth?

A little white spot on the corner of the mouth may be caused by oral dermatitis, trace element deficiency, sebaceous gland atopic disease and vitiligo. It is recommended to be admitted to hospital for local skin examination. If diagnosed as sebaceous gland atopic disease, no discomfort symptoms do not need treatment, feel affected by beauty, can be admitted to hospital for carbon dioxide laser treatment.