Gas trapped further along is "trapped wind" and causes similar pain. The abdomen becomes hard and bloated and the kitten shows signs of distress which may agitate the mother. Colic may be caused by overfeeding, bacterial infection, incorrect milk mixture, feeding too fast.
Because the mother becomes distressed, remove the kitten from the nest to treat it. Abdominal pain will be eased by releasing the gas build-up. Gently stroke the abdomen with warm damp cotton wool until the gas is released from one or other end of the kitten. If the gas is not released, seek veterinary help. The kitten should be fed little and often once it recovers. If it is prone to colic it may need preventative measures e.g. 0.5 ml Asalone (from chemists) 30 mins before feeding.
If all kittens in a litter are colicky, there is a problem with the mother’s milk. Some mothers produce too strong milk. Antibiotics given to the mother can cause colic in the kittens. In these cases, hand-rearing is necessary.