A woman in her 40s complains of hyperchromic stain on both u | Figure 1

A woman in her 40s complains of hyperchromic stain on both upper limbs, they do not have itching, redness, wounds or any other associated symptom.

She reports that she has already washed well with soap and nothing has changed, denies that the area is exposed to the sun, has had no contact with products. This already has been going on for more than 1 year.

How to help this patient? I thought about terra firma-forma dermatosis, rubbed it with gauze and isopropyl alcohol 70, I noticed a slight improvement, which was noticed by the patient as well. She says he's going to do it at home.

What would you do?