Always seek advice 1
Digestive symptoms such as diarrhoea, constipation or reflux may be common in children and are often harmless. It is understandable that changing their diet is often the first port of call. If symptoms last longer than usual or if weight loss occurs, it is important to seek medical advice before making any significant changes to a child’s diet.
1. http://www.webmd.com/children/features/digestive-doctor. Accessed December 2014.