They both are trying to fix the same kinds of problems - mental problems - but they have different approaches. Prescribing meds is not the only difference, they may have different ideas on other therapies. Some psychiatrists prescribe meds AND do the same kinds of therapies that psychologists do. Some psychiatrists just prescribe medicines and think that the medicines will fix everything. Some psychologists are quacks, and so are some psychiatrists. Some therapies work for some people but not others, and some medicines work for some people but not others. . There are many kinds of psychotherapies and drug therapies out there, with mixed levels of success. The most important factor is the competence, knowledge, and understanding of whatever kind of professional you choose, not whether or not it's a PhD or an MD. It make take some experimentation, trial and error, and research to find out exactly what your kid needs. . . I work with kids, but I'm not what you're looking for. Still, you can email me if you have more questions.