Odd flat sunken area grape-aized

Hello,
I have a totally odd sunken area on the skin near my wrist.  I have asked my rheumatologist and primary care physician if they have ever seen anything like it.  Everyone id baffled.  The best way to describe this is this:  is looks like a thumbprint, sunken area, skin has a shine like a healed birn scar.  But I never had a burn there,.   Right now  t looks slightly purple-ish, most often it is shades of pink.    I do not wear a watch, or bracelet  on that wrist so it isn't that.  But is is sunken in enough that people ask about it.  It isn't ringworm or molluscum contagiosum, however, tthe skin inside this depressed thumbprint has a smooth shine   It almost looks like  like a burn would because the inner surface has a shine like damged skin and scars,  I have has this sunken area for over a year.  PLEASE help?

[blondie7737]

My aunt has a place like this on her hip.  Look up morphea or scleroderma.