A psychiatrist is a medical doctor that specializes in diagnosing and treating mental health issues. Mental disorders are related to altered, impaired function - mental (eg thinking or perception) or behavioral (eg aggression, addiction, loss of self-control). It is common for a psychiatrist to treat a variety of ailments like depression, anxiety, insomnia and others. Psychiatric resources include pharmacotherapy, psychoeducation, and supportive psychotherapy.
A psychotherapist is a doctor with basic medical education and additional training in psychotherapy methods. Most often, psychotherapists work in psychoanalytic psychodynamic psychotherapy or cognitive behavioral therapy, both of which are scientifically based methods of psychotherapy. Psychotherapy is a treatment approach and a way of experiencing life, but primarily - a relationship that builds on mutual trust and vulnerability. It is a way of working through hardship in a non-judgmental manner, with clear boundaries and set rules that create the freedom to explore one’s true self.