The definition is as three or more hours a day of continued crying. The crying is not due to hunger, a wet diaper, or other visible causes, and the child cannot be calmed down. Although, A baby's fussiness may not be colic at all. The first thing to do is look for signs of illness. Sick babies may appear colicky but won't have the same strong sucking reflex, and they'll also drink less milk.
Colicky babies like to be cuddled and handled.
Colicky babies may spit up from time to time, but if your baby is actually vomiting, you should call the doctor. True vomiting is not a sign of colic. After all, breast-fed babies also get colic. They also believe that colic is not caused by gas. It may be hard to tell which came first, the gas or the colic, but they suggest that more often than not, a colicky baby has developed gas by swallowing too much air during crying spells.