Thanks for the query.
YOU might be suffering from a mild fungal infection
It is called p. versicolor,
Use an antifungal cream for a month, you will have relief with that.
If it still persists,
Please meet a dermatologist
and discuss regarding this.
Let me know if you have any other doubt.
you can ask a direct question to me on this forum, following the below link.
Wishing you a good health.