Residents' corner December 2014. Residents' editorial choice: what's new this month?

Matin RN Department of Dermatology, Churchill Hospital, Old Road, Headington, Oxford, OX3 7LJ, United Kingdom.
Martin-Gorgojo A Dermatology Department. General University Hospital Gregorio Marañon. Doctor Esquerdo 46, 28007, Madrid, Spain.
Travassos AR Dermatology Department, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, Lisboa, Portugal; Dermatology Center, Hospital CUF Descobertas, Lisbon, Portugal.
Buder-Bakhaya K Dermatology, Venereology, Allergology, University Hospital Wurzburg, Josef-Schneider-Str. 2, 97080 Würzburg, Germany.
Clayton H Department of Dermatology, University Hospital CHUV, Lausanne, Switzerland.
Nosbaum A University of California, San Francisco, Department of Dermatology, 513 Parnassus Avenue HSW-518, San Francisco CA 94143-0511, United States.