Yes I'm A 51 Year Old Male, And For The

Yes I'm a 51 year old male, and for the past 15 years I have had a problem with my lower legs which has progressively gotten worse,I thought it was just bad circulation as I have been overweight for quite a while , about 80 lbs ,! But lately the dark areas on the skin is getting really dark and the skin is dark in these areas on my lower legs , also the skin is paper thin and I'm getting water blisters