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Psychocutaneous Diseases

»	How do the fields of psychiatry and dermatology overlap?
»	What types of psychocutaneous disease are encountered in dermatology?
»	How often do patients with dermatologic disorders have associated psychologic morbidity?
»	What is the differential diagnosis of patients who complain that they are infested with parasites?
»	Define obsession or compulsion, phobia, delusion, and hallucination.
»	What is “delusions of parasitosis”?
»	How do you diagnose this disorder?
»	How do you treat this problem?
»	What are the major side effects of pimozide?
»	What if the patient is noncompliant with pimozide treatment?
»	What is Ekbom syndrome?
»	What is dysmorphophobia?
»	Name the three major categories of self-inflicted skin lesions. What differentiates them?
»	What are the clinical manifestations of dermatitis artefacta?
»	How should patients with dermatitis artefacta be treated?
»	What is the Gardner-Diamond syndrome?
»	How do Munchausen syndrome and Munchausen syndrome by proxy differ?
»	What is the differential diagnosis of patchy nonscarring alopecia?
»	What is the psychiatric diagnosis associated with trichotillomania?
»	How do you differentiate among the different forms of nonscarring alopecia?
»	Can a biopsy help in the differential diagnosis of patchy nonscarring alopecia?
»	What is trichotemnomania?
»	What are neurotic excoriations?
»	How do you treat this disorder?
»	What are the side effects of fluoxetine?
»	What is glossodynia?
»	Name some primary dermatologic disorders that might result in secondary psychiatric problems. What sorts of problems might these patients have?
»	Can stress exacerbate a primary dermatologic disorder?

Can a biopsy help in the differential diagnosis of patchy nonscarring alopecia?

Yes. A biopsy would reveal nonscarring alopecia with hemorrhage, and pigmented follicular casts in trichotillomania. Alopecia areata shows a perifollicular lymphocytic infiltrate and small anagen hairs. Tinea capitis shows fungal elements within hair follicles.