Cramping abdominal pain with intermittent intestinal obstruction finally prompted investigation in a 4 1/2-year-old boy with severe failure to thrive (FTT). An entero-enteric intussusception was corrected, and celiac disease was identified as the cause of his inanition. Concomitant FTT and cramping abdominal pain should prompt investigation for celiac disease and small-bowel intussusception.