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Psychiatry · Introduction. Psychology, psychiatry, and medical psychology

Subject and tasks of psychiatry

psychiatria

Psychiatry is a branch of medical science that studies mental illnesses and ways to help patients suffering from mental disorders. Unlike psychology, it focuses on medical diagnosis, comprehensive treatment, and expert assessment, rather than counseling healthy individuals.

Subject of studyThe mind (psyche) is an abstract category with no material, physical substrate.
Basis of diagnosisClinical observation: analysis of the patient's statements, facial expressions, and actions without instruments.
FunctionalityMany disorders are not associated with physical damage to brain structures or neurons.
4 min readFor medical studentsUpdated Sep 25, 2026
Material prepared by WhiteCoat Pro editorial team based on platform study guidesReviewed by medical editor: Aulov A. A., general practitioner · 09/24/2026

Psychiatry, psychology, and psychotherapy: what is the difference?

Psychiatry (from the Greek words psyche — soul and iatros — physician) is a strictly medical discipline. Its main objective is to help patients who cannot adapt normally to society due to a morbid mental state. A psychiatrist (a medical school graduate who has completed a residency) has the right to make clinical diagnoses, provide treatment, conduct prevention, and participate in various expert evaluations (occupational, military, forensic). At the same time, it is not within their competence to counsel healthy individuals who simply want to improve relationships in their family or team.

This is the domain of psychology (psyche + logos), a broad humanities field. Psychologists study human behavior in health, under stress, or during learning. They help overcome life crises but have no right to make medical diagnoses or prescribe medications.

Psychotherapy (psyche + therapeia) occupies a special place. It is a method of treatment through words and emotional interaction. Psychotherapy can be practiced by physicians (usually after obtaining a specialization in psychiatry) as well as certified psychologists, but strictly after completing additional specialized training.

Specificity of knowledge and distinction from neurology

The general subject of study for all three of these disciplines is the human mind. However, this is where the main difficulty lies for a medical student: the mind does not belong to the material world. It cannot be studied using the physical or chemical methods customary in somatic medicine. While in anatomy a contradiction can be resolved by direct observation (MRI, microscope, autopsy), in the science of the mind divergences in views are inevitable because we operate with abstract concepts.

It is important to clearly distinguish psychiatry from neurology. A neurologist looks for a specific "breakdown" in the nervous system — they use topographic diagnosis to find the exact site of the lesion that led to the loss of function. In psychiatry, however, attempts to tie depression or delusions to a specific area of the brain are considered a mistaken oversimplification. Any emotion or disorder is the result of the coordinated work of the entire brain, somatic systems, and sensory organs. For example, in fear, not only is the monoamine system activated, but the heart rate increases, palms sweat, and facial muscles contract.

Test your knowledge on the topicTasks from the "Psychiatry" course bank — immediate answers and explanations.

Diagnosis and biological therapy

In psychiatry, a diagnosis is made without using complex instruments. The basis is thorough clinical observation: the physician analyzes the patient's facial expressions, speech, and actions. This approach is deeply scientific, as symptoms do not group chaotically, but form typical, recurring combinations — syndromes. Correct recognition of the syndrome makes it possible to select appropriate treatment.

Regarding biological therapy (psychotropic drugs, electroconvulsive therapy), it is important to understand its limitations. No pills can rewrite a person's personal experience, change their character, or alter their core beliefs. The goal of medications is purely practical — to eliminate morbid symptoms that distort the perception of reality.

In addition, many mental pathologies are functional — meaning that neurons and brain structures are not physically damaged, and the disorder is based on upbringing conditions and individual experience.

Norm, anomaly, and disease

A diversity of views often leads to conflicts, but it is a mistake to write off any misunderstanding as an interlocutor's mental disorder. In psychiatry, there are objective criteria for health and pathology.

  • Norm is what is typical and occurs most frequently. For a healthy person, it is completely normal to experience the full range of emotions (from delight to irritation) or to avoid danger depending on the situation.
  • Anomaly is a departure from the typical. It is important to remember: an anomaly in itself is not equal to a disease. For example, the average intelligence quotient (IQ) is 90–110. If a person has an IQ of 70–80, this is an anomaly, but not always a pathology — they can compensate for a lack of quick-wittedness with hard work. Outstanding talents or an IQ above 120 are also anomalies that do not cause distress.
  • Pathology (disease) occurs when an anomaly is so pronounced that it makes a person completely different from those around them and is incompatible with health (e.g., an IQ dropping below 70).
How to memorize

To avoid confusing specialists, pay attention to the Greek roots: logos (psychologist) — study, working with healthy people through conversation; iatros (psychiatrist) — physician, medical treatment of mental illnesses; therapeia (psychotherapist) — treatment through words, requiring additional training.

Class and exam questions

Does a psychologist have the right to prescribe pharmacotherapy?

No, psychology is a branch of the humanities. A psychologist counsels healthy individuals experiencing difficult life situations and does not have the right to make medical diagnoses or prescribe medications.

Is it possible to find the exact brain area responsible for a specific mental disorder?

No, in psychiatry disorders are not associated with local damage (unlike neurological topographic diagnosis). Mental manifestations are the result of the entire brain working in a complex with sensory organs and somatic functions.

Do psychotropic drugs change a person's personality?

Biological therapy is incapable of changing a patient's individual experience or core beliefs. Its main task is to rid the patient of symptoms that prevent adequate perception of reality.

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What else to study on this topic

  • Formation of psychopathological syndromes from disparate symptoms
  • Functional mental disorders and the role of upbringing in their development
  • A psychiatrist's competencies in conducting expert evaluations (forensic, occupational, military)
  • The relationship between mental and somatic manifestations during intense emotions (using fear as an example)

Master the entire topic in the "Psychiatry" course

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  • Complete study guide on "Subject and Tasks of Psychiatry" and 499 more pages of the subject
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