Final answer:
Authorized topical medications that can be applied by a PT include methotrexate, fluorouracil, hydroxyurea, mercaptopurine, and thioguanine.
Step-by-step explanation:
The authorized topical medications that can be applied by a Physical Therapist (PT) include methotrexate (Abitrexate®), fluorouracil (Adrucil®), hydroxyurea (Hydrea®), mercaptopurine (Purinethol®), and thioguanine.