A strategy or approach that is intended to prevent an outcome or to alter the course of an existing condition.
A therapeutic intervention is an effort made by individuals or groups to improve the well-being of someone else who either is in need of help but refusing it or is otherwise unable to initiate or accept help. The intervention, which can be psychological, physical, or even pharmacological, may be led or guided by a professional interventionist or by friends or family members.
In some cases, an intervention takes the form of a confrontation or meeting between a person who is engaged in self-destructive behavior and concerned friends or family members. In other cases, where individuals are not able to make decisions for themselves, an intervention is a decision to take action on their behalf. This method, although helpful, may not end up helping every person requiring care.