Which babies are at higher risk for pyloric stenosis?
• Two to three out of 1,000 infants are affected by pyloric stenosis (PS). • Babies 2 to 8 weeks old are at the highest risk. • Caucasians seem to develop pyloric stenosis more frequently than babies of other races. • Boys develop pyloric stenosis four to five times more often than girls. • Pyloric stenosis may be inherited; several members of a family may have had this problem in infancy.
