As the day progresses, the infant begins a pattern of crying to release tension and frustration from the over stimulation. Another theory suggests that colicky babies have immature digestive systems, which make them hypersensitive to milk products, or to the diet of the nursing mother. This immaturity leads to a build-up of gas and therefore pain and cramping. Whatever the cause, parents can be assured that colicky babies are by no means unhealthy - they usually keep pace or exceed the weight gain of their peaceful peers. Movement often lulls colicky babies to sleep, such as Rocking, jiggling or gentle bouncing, Carrying in infant sling or Snuggli, Rides in the car, Baby swings or bouncy, vibrating baby seats.
Some babies respond to white noise such as car engine sounds, vacuums, or fan motors.
Comfort techniques such as pacifiers, warm showers with parent or infant massage can be helpful. Gas remedies such as burping, simethicone drops, gripe water or weak teas made from fennel, chamomile, anise, or comfrey may also reduce stomach pain. Creative parents have tried unusual colic treatments such as laying the infant face down on top of a running dryer, where the warmth and vibration are soothing. One mother found her baby responded only to bouncing - a treatment that quickly becomes exhausting to the parents. So the mom bought a huge ball, such as are used by physical therapists.