RT Book, Section A1 Honaker, Jeremy S. A1 Korman, Neil J. A2 Kang, Sewon A2 Amagai, Masayuki A2 Bruckner, Anna L. A2 Enk, Alexander H. A2 Margolis, David J. A2 McMichael, Amy J. A2 Orringer, Jeffrey S. SR Print(0) ID 1161344313 T1 Cytotoxic and Antimetabolic Agents T2 Fitzpatrick's Dermatology, 9e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9780071837798 LK dermatology.mhmedical.com/content.aspx?aid=1161344313 RD 2024/04/19 AB AT-A-GLANCECytotoxic and antimetabolic agents are used in dermatology to treat serious, life-threatening, and recalcitrant disease.Methotrexate and azathioprine are commonly used in dermatology whereas thioguanine, hydroxyurea, cyclophosphamide, chlorambucil, and liposomal doxorubicin are occasionally used.Methotrexate is U.S. Food and Drug Administration (FDA) approved for treatment of psoriasis and advanced mycosis fungoides, whereas cyclophosphamide is FDA approved for advanced mycosis fungoides only, and liposomal doxorubicin is approved for AIDS-related Kaposi sarcoma; other uses of the agent in this chapter occur on an “off-label” basis.Cytotoxic and antimetabolic agents act through inhibition and/or interruption of the cell cycle.Side effects and complications with these potentially dangerous medications are numerous, and close clinical followup and laboratory evaluation is necessary.Cytotoxic agents used in dermatology, as well as those initiated for other purposes, may yield distinctive cutaneous eruptions and cutaneous sequelae.