Hydroxyurea therapy.
D000328:Adult; D006801:Humans; D006918:Hydroxyurea / Q000009:adverse effects* / Q000627:therapeutic use; D008297:Male; D011565:Psoriasis / Q000188:drug therapy*; D011693:Purpura / Q000139:chemically induced*; D012867:Skin / Q000098:blood supply*
D006918:Hydroxyurea