Wickham's striae presented with whitish ring‐form on annular lichen planus. Issue 12 (December 2013) - Iga, Natsuko; Sakurai, Kenji; Murata, Teruasa; Ehara, Mizue; Tanaka, Masaru; Honda, Tetsuya; Kabashima, Kenji; Kore‐eda, Satoshi