Psychogenic itch.

Psychogenic itch can be defined as "an itch disorder where itch is at the center of the symptomatology and where psychological factors play an evident role in the triggering, intensity, aggravation, or persistence of the pruritus." The disorder is poorly known by both psychiatrists and dermatologists and this review summarizes data on psychogenic itch. Because differential diagnosis is difficult, the frequency is poorly known.

Psychogenic skin excoriations: diagnostic criteria, semiological analysis and psychiatric profiles.

Psychogenic excoriations are also called neurotic excoriations, dermatillomania or skin picking syndrome. We proposed diagnostic criteria and then performed a study of the psychiatric profiles of outpatients with psychogenic excoriations and the circumstances around the creation of these excoriations. Although the results must be interpreted with caution because the study was performed with only 10 patients, interesting data is provided about the onset of psychogenic excoriations, the behaviour of picking, and comorbidity.

[Stress and seborrheic dermatitis].

Background: It is widely accepted that episodes of seborrheic dermatitis are frequently induced by stress, as stated in all general reviews of the subject. However, there have been no studies to confirm this view.

Patients And Methods: This prospective study was performed in two phases.

Functional itch disorder or psychogenic pruritus: suggested diagnosis criteria from the French psychodermatology group.

Functional itch disorder or psychogenic pruritus is a poorly defined diagnosis. This paper sets out the proposed diagnostic criteria of the French Psychodermatology Group (FPDG). There are three compulsory criteria: localized or generalized pruritus sine materia, chronic pruritus (>6 weeks) and the absence of a somatic cause.