Seeing a professional sounds like a good idea - having a different view on your son's behaviour could allow you to be reassured that there's no underlying physical reason for his anger. Sometimes as mums (and grandmothers) we are so close to our children that we can't see the obvious cause of a problem! Two important things to consider in any behaviour management technique are great role-modelling and communication. Does your son understand the effects on others of his angry outbursts? Do you acknowledge his feelings? Can you show him how to appropriately express his disappointment when things don't go his way? Wishing you a good resolution to your concern; Janet Powell, The Parenting Coach