Thanks for posting your query.
Your symptoms are likely to be due to madicated tap reaction i:e chemical reaction. A clinical examination(white pathes on only covered tap area) sufficient to confirm the diagnosis.
so you should not take any medicine.spot will go on after some time.even you can show its faded after some time.chemical allergy
treated by withdraw of chemical.
Here are some general treatment measures which you can follow:
1) Provide complete rest and avoid other chemical apply on skin likes oientment also.
2) Apply hot water fomentation for prevent of cut and keep neat & clean also.
I hope this answers your query.
In case you have additional questions or doubts, you can forward them to me, and I shall be glad to help you out.
Please accept my answer in case you do not have further queries.
Wishing you good health.
dr neeraj gupta