The National Pediculosis Association (NPA) is conducting research, and surveys concerning collembola infestations (link here). A research project that they sponsored found that 18 out of 20 people who had been diagnosed with Delusory Parasitosis (DOP) were actually infested with collembola (link to research article). Research is continuing.
Medscape news article on these findings.
Authoritative resources concerning this condition
Survey of reports on synanthropic Collembola living in close association with man. This article discusses infestations and orders reports according to the type of association with humankind and ranks each source by authority.
Collembola References. This blog gives a survey of long ignored scientific literature which points to the unified conclusion that collembola can in fact infest humans.