Violaceous rash of dorsal fingers in a woman. Diagnosis: chilblain lupus erythematosus (perniosis).

@article{Fisher1996ViolaceousRO,
  title={Violaceous rash of dorsal fingers in a woman. Diagnosis: chilblain lupus erythematosus (perniosis).},
  author={Daniel A.C. Fisher and Mark Allen Everett},
  journal={Archives of dermatology},
  year={1996},
  volume={132 4},
  pages={459, 462}
}