Electrical impedance spectroscopy effective in detection of Atopic Dermatitis

Researchers investigating skin barrier dysfunction in children have made a breakthrough using electrical impedance spectroscopy (EIS) to detect the early signs of atopic dermatitis (AD). The study published in the Allergy Journal offers new hope for early diagnosis and intervention in this common skin condition.

Atopic dermatitis, a chronic skin disorder characterized by itchy and inflamed skin, often starts in childhood and can significantly impact a child's quality of life. Early detection and management are crucial, but traditional methods for assessing skin barrier function have limitations. This study explored the potential of EIS to fill this diagnostic gap.

The research involved EIS measurements taken at various intervals from 4 months to 3 years of age in children who either developed AD (66 participants) or did not (49 participants). Using these EIS measurements and the AD status of the children, a machine learning algorithm was developed to create an EIS/AD score. This score reflects the probability that a particular measurement indicates a child with active AD.

The results were promising. The EIS algorithm demonstrated an impressive ability to differentiate between healthy skin and skin affected by active AD, with an area under the curve (AUC) of 0.92, indicating high accuracy. Remarkably, it could also identify skin abnormalities in children who did not currently have active AD. Importantly, the EIS/AD score was consistent across different age groups, suggesting that the method is applicable from infancy through early childhood.

While the study found no clear link between the EIS/AD score and the severity of AD or sensitization to allergens, its primary achievement lies in its ability to detect early signs of AD. Early intervention in atopic dermatitis is often more effective, and this novel method could pave the way for timely treatment and improved outcomes for affected children.

This study suggests that EIS has the potential to revolutionize the detection of atopic dermatitis in children. With further development and validation, this method could become a valuable tool for clinicians, offering hope for improved management and better outcomes for children living with AD. 

Source:

Sasaki, M., Sundberg, M., Frei, R., Ferstl, R., Heye, K. N., Willems, E. P., Akdis, C. A., Lauener, R., & Roduit, C. (2023). Electrical impedance spectroscopy detects skin barrier dysfunction in childhood atopic dermatitis. In Allergy. Wiley. https://doi.org/10.1111/all.15895