8.1 Introduction to Psychological Disorders

3 min read•june 18, 2024

Emily Pedrazzi

Dalia Savy

Jillian Holbrook

AP Psychology 🧠

334 resources

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Diagnostic Guidelines

In order to properly diagnose a patient in a formal setting, clinical psychiatrists and psychologists use defined guidelines and symptom lists from the Diagnostic and Statistical Manual of Mental Disorders Edition 5 (DSM-5 ). 📖 All conditions in the DSM-5 are recognized by the American Psychological Association (APA). The DSM was revised to the 5th edition in 2013.

DSM Edition by Year Published

DSM-1	DSM-2	DSM-3	DSM-4	DSM-5
1952	1968	1980	1994	2013

Image Courtesy of Wikipedia.

Even though the DSM-5 is highly reliable and provides descriptions for every disorder with a variety of treatments, it can sometimes be hard to diagnose somebody because symptoms may become too similar.

Psychological Disorders

Something becomes a disorder once it interferes with an individual's daily life, schedule, and quality of living. A psychological disorder impacts one's cognition, emotion, or behavior, and these behaviors are maladaptive. This means that they disrupt everyday life rather than improve it as adaptive behaviors do.

The DSM-5 classifies disorders by categories:

Depressive Disorders—extreme sadness and loss of interest
Bipolar Disorders—depression and mania
Anxiety Disorders—fear and worry
Obsessive-Compulsive and Related Disorders—obsessions and compulsions
Trauma and Stressor Related Disorders
Dissociative Disorders—amnesia
Somatic Disorders
Eating Disorders

Historical Conceptions of Psychological Disorders

The root of psychiatric conditions based on perception has drastically changed through history, going through three etiologies: supernatural, somatogenic, and psychogenic. In some cases, multiple etiologies were used at the same time.

Those believing in a supernatural etiology believed mental illness was caused by supernatural phenomena such as possession, emotion of the gods, or astrology and astronomy-related events. 💫 One of the earliest proposed solutions was trephination. Holes were drilled into the skulls of people perceived to be mentally ill in order to release evil spirits. 👻
Popularized by Hippocrates and Galen, the somatogenic etiology relies on the principle that the root of psychological illness was due to a physiological cause. One of the earliest somatogenic theories was humorism. With humorism, each person had to balance four different fluids: blood, black bile, phlegm, and yellow bile. To resolve an imbalance in blood, a popular technique was blood-letting (a process where blood is drained). Aromatherapy is another common example of humorism. 🕯️
The most recently discovered etiology is psychogenic, which states that mental illness is psychological instead of physiological or supernatural. Psychogenic is the most commonly used approach in modern times, followed by some elements of somatogenic etiology. 🧠

Psychological Conditions in Legal Settings

In both courtrooms and clinical psychology/psychiatry offices, legalities exist in order to protect the patient 🛡️

Confidentiality laws protect a patient from potential discrimination or other negative implications by protecting almost all information presented during a psychological health session. In the United States, patient confidentiality can be broken to authorities and health workers if a patient is seen as a danger to themselves or others. 🙊

In a court of law, mentally ill patients, in certain circumstances, can plead legally insane, which is a claim that the defendant performed the action but cannot be held responsible as a result of a psychiatric episode. This situation is called an insanity plea or insanity defense. ⚖️

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🔎Unit 1 – Scientific Foundations of Psychology

🧠Unit 2 – Biological Basis of Behavior

👀Unit 3 – Sensation & Perception

📚Unit 4 – Learning

🤔Unit 5 – Cognitive Psychology

👶🏽Unit 6 – Developmental Psychology

🤪Unit 7 – Motivation, Emotion, & Personality

🛋Unit 8 – Clinical Psychology

8.0Unit 8 Overview: Clinical Psychology

8.1Introduction to Psychological Disorders

8.2Psychological Perspectives and Etiology of Disorders