Skin discoloration

I saw another post with a person who described my condition to a T.  The doctor suggested it might be capillaritis or Schamberg's so I took a look at images of both and neither look like my legs.  From the ankle to the mid-calf, I have heavy discoloration--less like freckles, more like a rash (but not a rash)--and my calves and feet are almost always warmer than the rest of my body.  It gets so bad at night, I have to have a fan blowing cold air on y legs or I annot sleep.  I have been elevating my legs to prevent waking with cramping or acute muscular pain.  A nurse friend suggested PAD, or some other circulatory problem.  Any suggestions based on this account?  I do not drink or smoke, but am overweight.  I am only 39 so you can imagine I am scared of this turning out to be something serious.

Thanks in advance for taking the time to read and respond.