RT Book, Section A1 Hay, Jr, William W. A1 Levin, Myron J. A1 Deterding, Robin R. A1 Abzug, Mark J. SR Print(0) ID 1145454751 T1 Colic T2 Quick Medical Diagnosis & Treatment Pediatrics YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9781264257614 LK accesspediatrics.mhmedical.com/content.aspx?aid=1145454751 RD 2023/04/02 AB An otherwise healthy infant aged 2–3 months seems to be in pain, cries for more than 3 hours a day, for more than 3 days a week, for more than 3 weeks ("rule of threes")Characterized by severe and paroxysmal crying that occurs mainly in the late afternoonColic is a behavioral sign or symptom that begins in the first few weeks of life and peaks at age 2–3 monthsIn about 30–40% of cases, colic continues into the fourth and fifth months