Dermatology Questions? Ask an Online Dermatologist.
Hi and welcome.
I think you have developed this due to dryness after exposure to wind. As this is acute i would suggest you to apply soothing lip balm and sunscreen over it. Take vitamin B supplement. You do not need topical steroids just moisturize your lips with coconut oil. If there are no visible lesion then possibility of lichen planus is less. If symptoms does not improve you might need biopsy for exact diagnosis.
Let me know if you have further questions.
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Wish you good health.