How can therapy help aid a child with severe mental disorders to prevent them from becoming a full fledged mental patient?

Reduces symptoms. Therapy can improve outcomes and change the trajectory of a child. The mechanisms are many including reduction of anxiety, reducing stress, improving adaptability, improving interpersonal dynamics and enhancing academic progression. Each of these phenomena can improve the prognosis of a child. For example, ocd treated with cognitive behavioral therapy shows improvements in brain function.