Thank you for your query.
do occur in children but a complete work up is required to find a possible cause at such a young age. Giving Actibile is not the answer in your son's case. He needs to hospitalized, investigated and put on antibiotics to control the infection in the gall bladder
. Once the infection is controlled then a planned surgical removal of the gall bladder is the management of choice.
I hope I have responded to your query to your satisfaction.
Wishing your son an early recovery.