[Stress and psoriasis -- a psychoneuroimmunological study]

Area of Science:

• Immunology
• Dermatology
• Psychoneuroimmunology

Background:

• Psoriasis is a complex polygenic disease influenced by environmental factors.
• The impact of stress on psoriasis patients requires further investigation to identify susceptible subgroups.
• Previous studies have not clearly defined stress-related patient subgroups or their immunological differences.

Purpose of the Study:

• To determine if experimental stressors can identify psoriasis patient subgroups with varying stress susceptibility.
• To investigate if these subgroups differ in immunological parameters.

Main Methods:

• The Trier Social Stress Test (TSST) was employed as the experimental stressor.
• Psoriasis severity was assessed using the Psoriasis Area and Severity Index (PASI) and subjective patient reports.
• Salivary cortisol, serum eosinophils, ICAM-3, and sIL-2R were measured to assess stress reactivity and immunological differences.

Main Results:

• The TSST effectively induced stress in psoriasis patients.
• A subgroup of patients showed increased skin affliction post-stress, while another group remained stable or improved.
• No significant differences in the tested immunological parameters were found between stress-reactive and non-reactive patient groups.

Conclusions:

• Experimental stress can reveal distinct responses in psoriasis patients' skin conditions.
• Current immunological markers do not reliably distinguish between stress-susceptible and stress-resilient psoriasis patient subgroups.
• Further research is needed to identify biomarkers for stress-related psoriasis phenotypes.