Psychological stress worsens eczema (atopic dermatitis) by directly impacting immune system cells.

noli's read

The link between stress and eczema is widely documented in scientific literature. Stress activates the hypothalamic-pituitary-adrenal axis, releasing cortisol and other mediators that can alter the skin barrier and modulate the immune response, thereby promoting inflammation (Source: systematic review in 'Journal of Allergy and Clinical Immunology'). Research shows that patients suffering from eczema often exhibit increased reactivity to stress factors, which triggers or accentuates flare-ups (Type of evidence: observational and clinical studies). This is not to say that stress is the sole cause of eczema, but rather a well-identified triggering or aggravating factor. This explanation is consistent with current knowledge in cutaneous neuroimmunology. The statement is therefore factual, measured, and supported by a scientific consensus on the mind-body interaction in inflammatory pathologies.

the sources

No named source held this one up — that absence is part of the verdict.