Sensory food aversion, an early childhood eating disorder, is a serious, permanent form of picky eating, in which the infant or the child consistently and persistently refuses certain foods based on specific characteristics, following one or more previous aversive experiences. Biological (sensory processing disorder, taste sensitivity) and environmental factors contribute to its development. Due to limited diet, specific dietary deficiencies may occur but weight gain is usually normal. Behavioral problems, anxiety disorder, autism spectrum disorder are often associated. Diagnosis can usually be made based on a detailed history, but further assessment may include pediatric examination, nutritionist consultation, and psychologic and occupational therapy assessment. Treatment is based on parent education and support in order to minimize mealtime battles and anxiety and to think together about strategies for expanding the child’s diet and to help them to accept new foods. As part of the interdisciplinary team, the pediatrician’s role is to monitor appropriate growth and development, exclude dietary deficiencies or prescribe supplementation if necessary. In our article, the screening and treatment of sensory processing disorder as part of the assessment of eating problems are introduced as an example of good clinical practice at the Early Childhood Eating and Sleep Disorder Outpatient Clinic at the Heim Pál National Institute of Pediatrics. Orv Hetil. 2023; 164(45): 1767-1777.