Urple fever is an illness that can affect agents who have been exposed to highly saturated urple prose. With PPC-grade medical care available, it is not generally a serious illness.
In addition to high temperature, symptoms include coughing and sneezing that produce a gaseous urple expectoration (not to be confused with the urple cloud). Full recovery takes about two weeks, during which time the agent should be restrained from strenuous activity (i.e., missions) and monitored for signs of permanent harm.
- "Highway to Hell" (Buffy the Vampire Slayer), Agent Rhysdux (DMS - BtVS) with Agent Ginmar (DAVD)
- Rhys and Ginmar contract urple fever during this mission, though it is not explicitly mentioned here.
- "Family ReUnion" (Buffy the Vampire Slayer), Agents Rhysdux and Honorificus (DMS - BtVS)
- "Official Buffy and Angel Fanfiction University," Chapter 13