<prompt> Most common age group affected with Infantile Colic is between0-3 months4-6 months7-9 months10-12 months  <response>: Infantile colicRule of threeCrying 3 hoursday--- 3 daysweek for 3 weeks.Facial grimacing, drawing up of legs and passing flatus.An infant usually outgrows colic by 3 to 4 months of ageRefer: Nelsons Textbook of Paediatrics 19thedition, pg no: chapter - 11 