Answer:
Psychiatrist
Step-by-step explanation:
A professional who is an MD with postgraduate training in abnormal behavior, can prescribe medication, and often treats the most severe disorders is a psychiatrist. Psychiatrists are medical doctors who specialize in the diagnosis and treatment of mental health disorders. They are trained to use a variety of approaches to help people with mental health conditions, including medications, psychotherapy, and other psychological treatments. Because of their medical training, psychiatrists are able to prescribe medications to help manage the symptoms of mental health disorders, and they often work with people who have severe or complex conditions that require a high level of care.