title: Painful oral ulcers with hydroxyurea therapy.
abstract: Five patients treated with hydroxyurea for various haematological malignancies developed multiple painful oral ulcers. Their neutrophil counts were either normal or elevated. The ulcers disappeared with cessation of hydroxyurea. Oral ulcers recurred when hydroxyurea was resumed in one of the patients. As the patients were unable to tolerate this painful side effect, hydroxyurea had to be discontinued. Appearance of painful oral ulceration seems to be independent of dosing rate or total cumulative dose of hydroxyurea.
authors.affiliation: Haematology Unit, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia.
authors.forename: M R
authors.initials: MR
authors.lastname: Norhaya
authors.forename: S K
authors.initials: SK
authors.lastname: Cheong
authors.forename: O
authors.initials: O
authors.lastname: Ainoon
authors.forename: N H
authors.initials: NH
authors.lastname: Hamidah
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000970:Antineoplastic Agents / Q000009:adverse effects* / Q000627:therapeutic use; D004305:Dose-Response Relationship, Drug; D005260:Female; D006402:Hematologic Diseases / Q000188:drug therapy*; D006801:Humans; D006918:Hydroxyurea / Q000009:adverse effects* / Q000627:therapeutic use; D008297:Male; D008875:Middle Aged; D019226:Oral Ulcer / Q000139:chemically induced*
chemical_list: D000970:Antineoplastic Agents; D006918:Hydroxyurea