“Infant colic is a commonly reported observation of excessive crying in infancy with an enigmatic and distressing character.” (Zeevenhooven et al. 2018) According to Rome IV the diagnostic criteria for clinical purposes include all of the following:
“1. An infant who is below five months of age when the symptoms start and stop
2. Recurrent and prolonged periods of infant crying, fussing, or irritability reported by caregivers that occur without obvious cause and cannot be prevented or resolved by caregivers
3. No evidence of infant failure to thrive, fever, or illness” (Benninga et al. 2016)