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Psychogenic excoriation is self-injurious behaviour characterised by compulsive picking of skin with negligible imperfections.1 Psychogenic parasitosis is an uncommon disorder in which patients have a false, fixed belief of being infested by an organism.2 Individuals may provide false evidence of infestation and frequently induce mechanical trauma to clear the purported organism.2
We present five unique cases of self-induced facial excoriations with psychiatric disease ranging from psychogenic excoriation to psychogenic parasitosis.
Patient 1 presented with a vertical hypertrophic scar involving the forehead (figure 1A). The patient admitted to skin picking. Three years earlier, an abscess from repeated acne pustule manipulation required surgical drainage. The scar was injected with triamcinolone acetonide with improvement.
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