67 years old woman with pigmented rash

    67 year old women presenting with asymptomatic pigmented rash., worsing over the last few years. It started bilaterally in the axilla. In addition it involves posterior neck and lower back.

    These areas are asymptomatic, never itchy and devoid of erythema.

    She is currently using TAC but never used anything before, other then OTC moisturizers