SymbolPickett, K.Frampton, G.Loveman, E.Author informationThis summary relates to DOI 10.1111/bjd.14435Linked Article: Pickett et al. Br J Dermatol 2016; 174:1228–1241.British Journal of Dermatology 174(6):p e92, June 2016.Copyright © 2016 British Association of Dermatologists