No, psychiatrists do not necessarily treat mental disorders only after they have been diagnosed by another professional. Psychiatrists are medical doctors who specialize in mental health and are qualified to diagnose and treat mental disorders independently.
Psychiatrists have the training and expertise to conduct comprehensive psychiatric evaluations, which include assessing a person's mental and emotional health, medical history, and relevant symptoms. Based on their evaluation, they can make a diagnosis and develop a treatment plan, which may include psychotherapy, medication, or a combination of both.
While psychiatrists can receive referrals from other professionals like psychologists, counselors, or primary care physicians, they are not dependent on these referrals to start treating a patient for mental health concerns. If a person seeks help directly from a psychiatrist, they can receive a diagnostic assessment and appropriate treatment based on their individual needs.
It's worth noting that in many cases, mental health professionals work collaboratively to provide the best care for their clients or patients. For example, a person may see a psychologist or counselor for psychotherapy while also consulting with a psychiatrist for medication management if needed. This type of multidisciplinary approach can be beneficial for some individuals, especially for complex or severe mental health conditions. Ultimately, the specific treatment approach depends on the individual's unique circumstances and the professional judgment of the mental health providers involved.