Brother and his wife separated last year and my nephew who is 7 has had bouts of vomiting throughout that time. He got seen by a consultant who carried out the various tests (Xrays/blood tests/barium swallow) and all results were fine.
Consultant said its most likely stress/anxiety due to the separation.
6 months after their separation, nephew has been introduced to new partners and the sickness has returned. Both parents won't have it that its anxiety/stress. Any other ideas/thoughts?