Table 1 Diagnostic criteria for functional itch disorder (or psychogenic pruritus) from the French Psychodermatology Group (previously published in Acta Derm. Venereol. 2007;87:341–4)
From: Psychogenic itch
Three compulsory criteria: |
Localized or generalized pruritus sine material (without primary skin lesion) |
Chronic pruritus (>6 weeks) |
No somatic cause |
Three of seven optional criteria: |
A chronological relationship between the occurrence of pruritus and one or several life events that could have psychological repercussions |
Variations in intensity associated with stress |
Nycthemeral variations |
Predominance during rest or inaction |
Associated psychological disorder |
Pruritus that could be improved by psychotropic drugs |
Pruritus that could be improved by psychotherapies |
