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Delusional Infestation (DI), represents one of the most difficult patient encounters that dermatology practitioners may experience. It is common for DI patients to doctor shop. Thus, dermatologists are one of several disciplines that may encounter DI patients in their practices. Others include veterinarians, epidemiologists, emergency departments, mental health practitioners, and entomologists. In this article, entomologist, Dr. Gale E. Ridge, with extensive DI experience, was interviewed to find out what an entomologist's perspective has been and what we, the dermatology providers, can learn from that. This is followed by a discussion by the dermatology experts on how the experience of entomologists compares to our experience and what we can learn from them.

This article introduces to the dermatology provider two medications for the treatment of tardive dyskinesia (TD), which were the first medications approved by the US FDA specifically for the treatment of TD. In addition to describing these two new medications, this article will also provide a focused review of the pathogenesis of TD, as well as non-FDA-approved treatments, which have been tried prior to the advent of these medications. A PubMed search was conducted and articles were reviewed by the senior authors and included if they were relevant for dermatologists regarding etiology, symptoms, risk, and treatment of TD. One of the most widely accepted explanations of TD involves the concept of 'dopamine receptor hypersensitivity state.' There are several other less well substantiated proposed pathogenic pathways of TD. The clinical manifestation is characterized by involuntary movements. Prevention includes switching to a 2nd generation agent or using the lowest dose possible for the shortest amount of time. Two new FDA-approved medications for TD are also discussed and reviewed. TD now has FDA-approved medications for treatment. Now, there is even more reason for the dermatologist to have increased confidence when treating delusions of parasitosis (DOP) with antipsychotic agents. [ABSTRACT FROM AUTHOR]