[Atopic dermatitis and stress? How do emotions come into skin?]

Area of Science:

• Neuroimmunology
• Dermatology
• Psychoneuroendocrinology

Background:

• Stress is a known factor in atopic dermatitis (AD) development and exacerbation.
• The precise physiological mechanisms linking stress to AD remain incompletely understood.
• Recent research explores neuroimmune, psychoendocrine, and skin barrier aspects of stress in AD.

Purpose of the Study:

• To review current research on the mechanisms by which stress influences atopic dermatitis.
• To highlight the roles of neuroimmune signaling and skin barrier function in stress-induced AD.

Main Methods:

• Review of recent neuroimmunological studies.
• Examination of psychoendocrinological findings.
• Analysis of skin barrier integrity under stress.

Main Results:

• Neuropeptides and neurotrophins are implicated in stress-induced neurogenic inflammation.
• Mast cells are crucial in stress-related inflammatory responses.
• Stress, via elevated cortisol, impairs skin barrier function by reducing lamellar body secretion and down-regulating antimicrobial peptides (beta-defensin, cathelicidin).

Conclusions:

• Stress significantly impacts atopic dermatitis through complex neuroimmunological and endocrinological pathways.
• Maintaining skin barrier integrity and understanding neuroimmune interactions are key to managing stress-related AD.