Colic is when after a baby is fed the baby cannot settle, cries excessively and pulls up their legs to the tummy.
Nobody knows the exact cause but it is often associated with excessive air intake during feeding.
It sometimes starts in the first few weeks of life but normally resolves by the time they are four months old.
There are certain things you can do to try and alleviate symptoms.
Regular winding during feeding ,trying different teat sizes if bottle fed, be careful of eating certain foods if breast feeding, massaging or simply a nice warm bath