Morgellons in the American Journal of Psychiatry

From the paper:
Diffuse Pruritic Lesions in a 37-Year-Old Man After Sleeping in an Abandoned Building“, by Jeffrey Dunn, M.D., Michael B. Murphy, B.A., Katherine M. Fox, B.A., Am J Psychiatry 164:1166-1172, August 2007:

A controversial phenomenon possibly related to delusions
of parasitosis inspiring discussion and media attention
is Morgellons’s disease. As in delusions of parasitosis,
patients describe insects/parasites crawling on or under
the skin, are convinced they are infested and contagious,
and produce physical “evidence” of infestation. In particular,
though, patients complain of fibers extruding from the
skin; such particles produced for examination have been
variously identified as cellulose, fibers with “autofluorescence,”
fuzz balls, specks, granules, Strongyloides stercoralis,
Cryptococcus neoformans, “alternative cellular energy
pigments,” and various bacteria. In no case, however, has
an infectious etiology for these mysterious symptoms
been confirmed. Morgellons’s disease is largely regarded
in the dermatology literature as a manifestation of delusions
of parasitosis (and potentially a means of promoting
patient rapport through destigmatization), despite the efforts
of the Morgellons Research Foundation to promulgate
an infectious rather than a neuropsychiatric etiology.
Until a treatable infectious component is identified, patients
can continue to be treated with neuroleptics—pimozide,
risperidone, aripiprazole—which have been reportedly

Also note eMedicine article by Noah S Scheinfeld, MD, JD, FAAD

Savely et al introduced the term morgellons disease to describe a type of infestation characterized by fibers attached to the skin. The entity appears to be little more than a new designation for DP. Koblenzer and Waddell and Burke have discussed the utility of the term, with Murase et al finding the term useful for building a therapeutic alliance with patients with DP. The Centers for Disease Control and Prevention is currently investigating Morgellon disease.

See also similar sentiments in the Atlas of Human Parasitology, 2007

So it seems that Psychiatrists, Dermatologists and Parasitologists all agree somewhat.