What Causes White Discoloration Of Lower Lip?

Brief Answer:
Diagnosis of vitiligo is clinical and not investigative.

Detailed Answer:
Thanks for asking on HealthcareMagic.

I have checked the attached image and it could be either vitiligo or post inflammatory hypopigmentation (PIH) of your lips. However, to me it looks more like PIH. In case of vitiligo the margins are sharp but that is not the case in yours.

Vitiligo can usually be diagnosed by your physician, based on a skin examination. Further tests are rarely needed. However, it is likely that your doctor would ask for family history whether anybody in your family has vitiligo and if you remember having any swelling and inflammation of the lips or cold sores before the lips lost their color, and if any other area of your body that has white patches. However, lip biopsy will give a confirmatory diagnosis.

Regards

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Brief Answer:
It is unlikely to be vitiligo

Detailed Answer:
Its good to know that you have no family history of vitiligo and that you do not have white patches elsewhere. Hence the chances of vitiligo are even less. In any case I had felt more in favour of PIH.
Vitilex gel is unlikely to help. Rather application of hydrocortisone or mometasone cream is likely to be helpful. However, I would insist you to remain under the followup of a dermatologist so that he can evaluate, monitor and guide the treatment.
Regards

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