Functional Itch Disorder
Diagnostic Criteria
- The British Association of Dermatologists recognizes functional itch disorder as a distinct clinical entity with specific diagnostic criteria, including generalized pruritus without visible skin lesions, chronic duration, and no somatic cause identified after thorough investigation, according to the British Association of Dermatologists 1, 2, 3, 4, 5
- Diagnostic criteria for functional itch disorder include compulsory criteria such as generalized pruritus, chronic duration, and no somatic cause, as well as optional criteria like chronological relationship with psychologically significant life events, intensity variations associated with stress, and worsening at night, as recommended by the British Association of Dermatologists 1, 2
Psychological Mechanisms
- Pruritus can be directly triggered by psychological factors through well-documented neurological pathways, including stress activating neural circuits in the hippocampus and subcortical structures, according to the British Journal of Dermatology 2, 4
- Negative emotions, including rage, fear, annoyance, and embarrassment, can trigger or worsen itching, as reported in the British Journal of Dermatology 2, 4
- Visual and verbal suggestion alone can elicit pruritus, as demonstrated in studies published in the British Journal of Dermatology 2, 4
Management
- The "Coping with Itch" program demonstrated significant improvements in itch-related coping, reduced catastrophizing thoughts, and decreased healthcare utilization, though it did not reduce itch intensity itself, according to the British Journal of Dermatology 1, 3
- Components of the "Coping with Itch" program include education on trigger avoidance, relaxation techniques, and cognitive-behavioral modifications, as recommended by the British Journal of Dermatology 1, 3