Hi and thanks for reading. To answer your question...practitioners such as psychiatrists, psychologists and psychiatric social workers are the ones who normally do art therapy with patients with all sorts of problems. It can be children who have been abused or neglected, teenagers or adults suffering from depression, stroke patients, elderly patients who are a little disturbed. I guess art therapy can be used to treat or just to get some patients to "talk" about their feelings through art. Especially with children! If you look at the last picture in my post, you will see that sometimes children draw pictures about things they think about but they don't necessarily talk about it. It can be something that has happened to them or what they see at home. This is a way for teachers and parents to know that there is a mental problem that has to be treated.
RE: Art therapy - it's not just for kids