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Psychiatry · Chapter 25. Disorders of Adult Personality and Behaviour

Anxious personality disorder

Psychasthenia

Anxious personality disorder is a condition characterized by pronounced hypochondriasis and fear of making mistakes, combined with pedantry and constant doubt. In domestic psychiatry, such traits are traditionally described within the framework of psychasthenia, which unites anxious and anankastic radicals.

ClassificationIn ICD-10, it is classified under code F60.6 (Anxious [avoidant] personality disorder)
Main FearA panic fear of failure, making mistakes, and social disapproval
Stress ResponseRapid development of intrusive thoughts (obsessions) and fears (phobias)
WorkflowDrive for perfectionism, workaholism, and an aversion to weekends
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

Concept of psychasthenia and classification according to ICD-10

In clinical practice, anxious character traits are often viewed through the lens of psychasthenia. This is a specific disorder manifested by a persistent combination of anxiety, suspiciousness, and indecisiveness with excessive meticulousness. According to the International Classification of Diseases, Tenth Revision (ICD-10), personalities with this character makeup are divided into two main subclasses:

  1. Anankastic (obsessive-compulsive) personality disorder [F60.5]. It is characterized by the total predominance of thoroughness and pedantry in all areas of life.
  2. Anxious (avoidant) personality disorder [F60.6]. The foreground is occupied by a tendency toward anxious apprehensions, fear of social disapproval, and fear of making a mistake.

Character and behavioral features

Individuals with an anxious disorder have a specific attitude toward any activity. They demonstrate extreme meticulousness and panic at the prospect of anything new. Frequently, such a person consciously turns down promising career growth to eliminate even the slightest probability of a possible failure.

The greatest stress for them is the necessity of making a choice. The need to make decisions causes colossal anxiety, and the fear of making a mistake literally paralyzes their willpower, causing patients to miss numerous life opportunities. They are always punctual, as they strive to avoid failures, and can spend a very long time pondering their plans.

However, once a decision is finally made, they begin to show extreme impatience, working persistently and tirelessly. An interesting feature is their aversion to weekends—during rest periods, they feel as though they are wasting time.

People around them often mistakenly take their behavior for ordinary sluggishness, but in reality, this is a manifestation of deep perfectionism and a desire to bring any initiated task to absolute perfection. In addition, such patients are extremely self-critical and prone to underestimating their own merits, which often leads to depression. They try to compensate for their pessimism and low self-esteem through pronounced altruism, as well as an idealistic belief in the existence of higher justice.

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

Emotional sphere and communication

Communication with such patients has a number of hidden features. Upon superficial contact, they are perceived as withdrawn, aloof, and emotionally cold people. Internally, however, they are extremely sentimental and impressionable natures. They can cry sincerely while in complete solitude, but never allow themselves to display their true feelings in public.

Total indecisiveness forces them to continuously seek support and ask for advice from others. At the same time, they may allow themselves exceptional frankness only within the circle of their closest friends. To somehow brighten up their monotonous daily life, they often resort to fantasies, but carefully conceal them from outsiders.

Cognitive functions and reaction to stressors

In the cognitive sphere, patients with psychasthenia often demonstrate a high level of intelligence. They read a lot, possess extensive knowledge, and are particularly well-versed in exact sciences. Despite this, they experience a panic fear of public speaking. Their thinking is often characterized by a tendency toward fruitless philosophizing (so-called "mental rumination"), which causes them serious personal distress.

The reaction to stress is extremely specific: in psychotraumatic situations, they easily develop intrusive thoughts (obsessions) and various fears (phobias). Excessive suspiciousness naturally leads to heightened attention to their own health status, which becomes fertile ground for the development of severe hypochondriasis and depressive states.

Briefly: answers to topical questions

What are the diagnostic criteria for anxious (avoidant) personality disorder in ICD-10?

In the International Classification of Diseases, Tenth Revision, anxious (avoidant) personality disorder [F60.6] is considered within the framework of psychasthenia. It is characterized by a tendency toward anxious apprehensions, fear of mistakes, and fear of disapproval.

How to memorize

To remember the essence of psychasthenia, use the rule of three "Fs": Fear (of the new and of mistakes), Meticulousness (bordering on perfectionism), and Doubt (paralysis of will when making choices).

Class and exam questions

Why are such patients often considered sluggish?

Their external sluggishness is related to extreme perfectionism. They strive to bring any initiated task to absolute perfection, carefully and lengthily pondering every step.

How do they behave after making a decision?

As soon as the agonizing choice is made, indecisiveness gives way to impatience. Patients begin to work persistently, tirelessly, and strive to implement the plan as quickly as possible, forgetting about rest.

Are they prone to emotional coldness?

Only externally. Inside, they are extremely sentimental, impressionable, and may cry in solitude, yet in public, they carefully conceal their true feelings.

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What else to study on this topic

  • Anankastic personality disorder (F60.5) as a variant of psychasthenia
  • Mechanisms of formation of hypochondriacal states in anxious disorder
  • Analysis of a clinical case of a 41-year-old female patient with depression and anxiety
  • Differential diagnosis of psychasthenia and histrionic personality disorder

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