Try Deriva MS gel once in a week at night ( very little ) only on affected area . Strong gel. Do not rub or over apply

Thanks for the query. This presentation can be seen with many diseases. This is limited information to make precise recommendations. The best option is to consult a Dermatologist to understand the condition. A thorough evaluation if necessary should be done. A photograph of the affected area will help you get better recommendations. Hope it helps you.