| P: peak of crying (Baby may cry more each week, the most in month 2, then less in months 3-5) |
| U: unexpected (Crying can come and go and you don't know why) |
| R: resists soothing (Baby may not stop crying no matter what you try) |
| P: pain-like face (A crying baby may look like they are in pain, even when they are not) |
| L: long-lasting (Crying can last as much as 5 hours a day, or more) |
| E: evening (Your baby may cry more in the late afternoon and evening) |
| From Barr M. The Period ofPURPLE Crying. National Center on Shaken Baby Syndrome, 2014. |
