A Cross-Sectional Study for the Assessment of Fractional Exhaled Nitric Oxide in Children with Atopic Dermatitis and Reactive Airway Disease in Comparison to Healthy Controls

Introduction: Nitric oxide (NO) is an important biological mediator of inflammation which is exhaled after being produced in the lungs. Fractional exhaled NO (FENO) is a new tool which measures the amount of NO exhaled. Aims and Objective: The objective of our study was to find the correlation between the FENO levels between atopic dermatitis and asthma patients in comparison to healthy controls and hence identify steroid responsiveness. Methodology: Our study was a cross-sectional observational study performed in a tertiary care hospital involving 150 children (>5–