title: Woronoff ring during anthralin therapy for psoriasis.
mesh_terms: D000873:Anthracenes / Q000009:adverse effects*; D000875:Anthralin / Q000009:adverse effects* / Q000627:therapeutic use; D004890:Erythema / Q000139:chemically induced; D006801:Humans; D008875:Middle Aged; D010859:Pigmentation Disorders / Q000139:chemically induced*; D011565:Psoriasis / Q000188:drug therapy* / Q000473:pathology; D012867:Skin / Q000473:pathology
chemical_list: D000873:Anthracenes; D000875:Anthralin