Clinical approaches to failure to thrive of infants and toddlers: a new paradigm

Failure to thrive (FTT) is a term used to describe growth failure in infants and toddlers. The three categories of FTT are based on anthropometric measurements of weight, length, and head circumference for age. Type 1 FTT is the failure to gain weight due mainly to inadequate nutrition. Type 2 FTT is a clinical condition associated with short stature induced by endocrine or genetic factors. Type 3 FTT results from chromosome anomalies or central nervous system abnormalities. Pediatric endocrinologists may be involved in treating patients with short stature of type 2 FTT. Pediatric gastroenterologists may be interested in patients with malnutrition of type 1 FTT, and pediatric psychologists may play a major roll in treating those with non-organic FTT or feeding disorders. This review introduces a new paradigm of clinical approaches to FTT in infants and toddlers to emphasize the importance of multidisciplinary clinical approaches to FTT.