Psychiatrist – A Psychiatrist is a medical doctor who is an expert in mental health. They specialise in diagnosing and treating people with mental illnesses.
To become a psychiatrist in Australia or New Zealand, a doctor must train for at least another 6 years after finishing medical school. Their medical training means that they understand both physical illnesses and mental illnesses.
Just as cardiologists are doctors who specialise in diseases of the heart, and oncologists are doctors who specialise in treating cancer, psychiatrists are doctors who specialise in mental health.