Woronoff's rings with PUVA therapy.
D006801:Humans; D008730:Methoxsalen / Q000009:adverse effects* / Q000627:therapeutic use; D010778:Photochemotherapy / Q000009:adverse effects*; D011565:Psoriasis / Q000188:drug therapy / Q000628:therapy; D012871:Skin Diseases / Q000139:chemically induced / Q000209:etiology*; D014467:Ultraviolet Therapy / Q000009:adverse effects*
D008730:Methoxsalen