Allergy to dithranol.
D000873:Anthracenes / Q000009:adverse effects*; D000875:Anthralin / Q000009:adverse effects*; D003877:Dermatitis, Contact / Q000209:etiology*; D003875:Drug Eruptions / Q000209:etiology*; D005260:Female; D006801:Humans; D010328:Patch Tests; D011565:Psoriasis / Q000188:drug therapy
D000873:Anthracenes; D000875:Anthralin