Familial partial lipodystrophy (also known as "Köbberling–Dunnigan syndrome") is an autosomal dominant skin condition characterized by the loss of subcutaneous fat.
Familial partial lipodystrophy also refers to a rare condition in which there is a loss of subcutaneous fat in the upper section of the body, face to trunk, however the lower half of the body remains unaffected.
Type 1 is believed to be underdiagnosed.
References
Familial partial lipodystrophy Wikipedia(Text) CC BY-SA