Sir My lower half of both legs have got black pigmentation which progressively increased and now almost coleased all together in about 10 years of duration.My mother ha also same problem and my two brothers have also in lesser qantity.there is no symptom like itching etc.except the cosmetic bad look. I am diabetic of 12 years duration and hypertensive of 30 years with control by drugs.I am 63 years old.
Hi, Thanks for writing in. The condition you are suffering can be macular amyloidosis/lichen plans pigments etc.  Treatment can be given only after confirmation of diagnosis. Few procedures like skin biopsy can be helpful for diagnosis. They are available at dermatology clinics.  Images will help a lot in establishing diagnosis. Images can be uploaded by users in premium questions area. Please consult a good dermatologist for proper examination and prescription medications.  Hope this helps. Regards Chat Doctor.