Stress can have several negative effects ... the skin barrier by decreasing the production of ceramides. This leads to trans epidermal water loss making the skin susceptible to external aggressors.

More information: Hang Zhou et al, Skin Effect of Nonlinear Optical Responses in Antiferromagnets, Physical Review Letters (2024). DOI: 10.1103/PhysRevLett.133.236903 Provided by Chinese Academy ...

Effects are distinguished in prompt (< 2 weeks), early (2-8 weeks), midterm (6-52 weeks) and long-term (>40 weeks). The National Cancer Institute (NCI) has established a skin reaction grading system ...