Category · F60-F69 block
F63 — Habit and impulse disorders
Terminology note: F63 covers repeated acts with no clear rational motivation, generally harmful to the person's own interests, that the person describes as driven by impulses they cannot control — distinguished from ordinary, gain-motivated behaviour by the recurrent failure-to-resist, tension-then-relief cycle.
What is this category?
F63 groups a small number of named, repetitive behaviour patterns defined by the same underlying structure: a rising sense of tension before the act, a sense of relief or gratification during or immediately after it, and a repeated failure to resist the impulse despite the behaviour's harm to the person's own interests. F63.0 (pathological gambling), F63.2 (pathological stealing, or kleptomania), and F63.3 (trichotillomania, recurrent hair-pulling) are the named subtypes taught in depth here.
Core diagnostic concept
The decisive feature across every F63 subtype is the same recurring cycle — rising tension, the act, then relief — rather than the behaviour's outward content. This is what distinguishes F63 from an occasional, gain-motivated instance of the same surface behaviour (a single bet placed for the money, a single theft for material benefit), which does not show this cycle and is not, by itself, a disorder.
Key diagnostic features
- Recurrent failure to resist an impulse
- The behaviour recurs repeatedly despite the person's own attempts, or stated wish, to stop.
- Rising tension before the act
- A sense of mounting tension or arousal builds in the period leading up to the act.
- Relief or gratification during or after
- The act itself brings a sense of relief or gratification, which is part of what maintains the cycle.
- Not primarily about material gain
- The behaviour is not adequately explained by rational, gain-motivated reasoning, even though it may superficially resemble a gain-motivated act (e.g. gambling for money, stealing an item of value).
How to weigh evidence
These learning labels are teaching aids, not official ICD-10 terminology (see Sources and Method).
- supports A repeated pattern of the behaviour with a clear rising-tension-then-relief cycle, recurring despite the person's own attempts to stop and despite harm to their own interests (financial, legal, or relational).
- consistent not decisive A person describes gambling occasionally for entertainment, or taking an item on a single occasion, without describing any tension-relief cycle or repeated failure to resist.
- raises alternative The behaviour occurs as one expression of a broader, pervasive personality pattern (e.g. dissocial personality disorder's general disregard for rules) rather than as an isolated impulse-control pattern.
- contradicts or weakens The behaviour is a single, isolated incident motivated by a clear rational or material reason, with no recurrence and no described tension-relief cycle.
- missing and necessary to ask Whether the behaviour is recurrent, whether it follows the tension-then-relief pattern, and whether it occurs against a pervasive personality disturbance or in relative isolation.
Diagnostic boundary
F63 requires a recurrent, rising-tension-then-relief cycle that the person struggles to resist, harmful to their own interests and not primarily gain-motivated — a single, rationally-motivated instance of the same surface behaviour does not meet this threshold.
Full comparisons:
Duration and course
Minimum duration: Not fixed by a single universal threshold; recurrence of the specific tension-relief cycle is more decisive than a specific duration count.
Course: Often persistent or episodic once established, and can coexist with significant financial, legal, or relational harm.
Included presentations
- Pathological gambling: recurrent gambling that dominates the person's life, with the characteristic tension-relief cycle, despite harmful financial and social consequences.
- Pathological stealing (kleptomania): recurrent failure to resist impulses to steal items not needed for personal use or monetary gain, with the characteristic tension-relief cycle.
- Trichotillomania: recurrent, noticeable hair loss due to a repeated failure to resist impulses to pull out hair, with the characteristic tension-relief cycle.
Exclusions and distinguishing presentations
| If this is true instead… | Consider | Why |
|---|---|---|
| A single, gain-motivated instance of the surface behaviour (a bet placed for the money, a theft for material benefit), with no recurrent tension-relief cycle | gain motivated act implies impulse disorder | A rational, gain-motivated, non-recurrent act does not show F63's characteristic cycle and is not, by itself, an impulse-control disorder. |
| The behaviour occurring as one expression of a broader, pervasive personality disturbance | F60 | When the behaviour is one part of a wider pervasive pattern of disregard for rules and others' rights, the personality disorder is the more precise classification. |
Four-character subtypes (orientation)
A learner should check for the specific tension-then-relief cycle, and rule out a simple rational/gain-motivated act, before applying any F63 subtype — the surface behaviour alone (gambling, taking an item, pulling hair) is not enough.
- F63.0 — Pathological gambling
- Recurrent gambling dominating the person's life, with the tension-relief cycle. (in_depth)
- F63.1 — Pathological fire-setting [pyromania]
- Recurrent fire-setting with the tension-relief cycle. (taught for orientation only, not separately assessed in this pilot)
- F63.2 — Pathological stealing [kleptomania]
- Recurrent stealing of items not needed for personal use or gain, with the tension-relief cycle. (in_depth)
- F63.3 — Trichotillomania
- Recurrent hair-pulling causing noticeable hair loss, with the tension-relief cycle. (in_depth)
- F63.8 — Other habit and impulse disorders
- A habit and impulse disorder not matching the named subtypes. (taught for orientation only, not separately assessed in this pilot)
- F63.9 — Habit and impulse disorder, unspecified
- A habit and impulse disorder identified but without enough information to specify further. (taught for orientation only, not separately assessed in this pilot)
External causes to check first
Categories in this block require that the disturbance is not better explained by another external cause listed below. These short capsules are reminders, not full teaching modules.
Boundary capsule — Pervasiveness and onset across F60-F63
A shared reasoning check for telling apart a specific personality disorder (F60), a mixed or troublesome personality disturbance not meeting a single F60 pattern (F61), a personality change with a definite later onset following a catastrophic experience or psychiatric illness (F62), and a recurrent impulse-control pattern that is not itself a pervasive personality disturbance (F63) — four categories that can all present with 'this person's behaviour causes problems for them and others' but that require different evidence about pervasiveness, timing of onset, and whether a genuine baseline personality can be documented.
What to check:
- Onset and course: has the pattern been present, essentially unchanged, since childhood, adolescence, or early adulthood (points toward F60/F61), or is there a documented, previously different personality baseline with a definite, later change following a specific catastrophic experience or a psychiatric illness (points toward F62)?
- Pervasiveness: does the pattern show up rigidly and inflexibly across most personal and social situations (points toward F60/F61/F62), or is it a single, recurrent behavioural cycle that is otherwise circumscribed, without evidence of a broader pervasive personality disturbance (points toward F63)?
- Fit to a specific pattern: does the presentation clearly and predominantly match one of the named F60 patterns (e.g. dissocial, emotionally unstable, dependent), or does it show troublesome features from several patterns without a clear single fit, or change episodically over time (points toward F61 rather than F60)?
- Distress and control: for a repeated, tension-then-relief behavioural cycle specifically, is it experienced as a struggle to resist a specific impulse, rather than as the person's stable, ordinary way of relating to others and the world?
A full personality assessment or a structured clinical interview, both of which are outside this capsule's scope and are needed before any of these classifications is used in real clinical practice.
Worked example — kleptomania versus a single theft for gain
A 38-year-old, financially comfortable and with no history of other rule-breaking, describes a two-year pattern of occasionally taking small, inexpensive items from shops that she does not need and often discards afterward. She describes a rising tension beforehand that only eases once she has taken the item, followed by guilt, and says she has tried and failed to stop several times.
- Step 1 — Check for material motivation: the items are inexpensive, not needed, and often discarded — not taken for financial gain.
- Step 2 — Check for the tension-relief cycle: rising tension beforehand, relief upon taking the item, then guilt afterward.
- Step 3 — Check for recurrence and failed attempts to stop: a two-year pattern, with repeated unsuccessful attempts to stop.
- Conclusion — F63.2, Pathological stealing (kleptomania) — the tension-relief cycle and absence of material motivation together distinguish this from an ordinary theft for gain.
Interactive practice
- Type A The pull to bet again Recognition / application · Foundation
- Type B One bet, for the money Boundary discrimination · Transfer
- Type A The hair loss she won't explain Recognition / application · Foundation
Retrieval prompts
Try answering each of these from memory before revealing where to check. Nothing you think or type here is sent or saved anywhere.
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Describe the three-part cycle that defines every F63 subtype.
Reveal answer location
Check Duration and course, Diagnostic boundary, or the rapid revision card below — the cue you need is one of those, in this category's own already-authored wording.
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Explain why a single theft motivated by financial need is not, by itself, evidence of kleptomania.
Reveal answer location
Check Duration and course, Diagnostic boundary, or the rapid revision card below — the cue you need is one of those, in this category's own already-authored wording.
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Explain how F63 is distinguished from a personality disorder when the same surface behaviour is present.
Reveal answer location
Check Duration and course, Diagnostic boundary, or the rapid revision card below — the cue you need is one of those, in this category's own already-authored wording.
These self-checks are a personal study aid only, visible to you on this page for this visit — they are not stored and do not affect your mastery dimensions.
Rapid revision card
F63: F63 requires a recurrent tension-then-relief cycle around an impulse the person struggles to resist, harmful to their own interests and not primarily gain-motivated.
Decisive boundary cues:
- A recurrent tension-relief cycle, not primarily gain-motivated -> weighs toward the matching F63 subtype.
- A single, rationally gain-motivated instance with no recurrence -> weighs against any F63 subtype.
- The behaviour as one expression of a broader pervasive personality pattern -> weighs toward F60 instead.
Duration/course: Recurrence of the specific cycle matters more than a fixed duration count.
Nearest alternatives: f60, f10
Common mistake: Treating any instance of gambling, taking an item, or hair-pulling as automatically evidence of an impulse-control disorder, without checking for the tension-relief cycle.
Retrieval prompt: Is there a genuine rising-tension-then-relief cycle here, or is this a single, rationally motivated act?
(or use your browser's print function) Open full-page printable revision view →
Related glossary terms
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Habit and impulse disorder
A disorder characterised by repeated acts that have no clear rational motivation, generally harm the person's own interests or those of others, and are described as involving a rising sense of tension before the act and a sense of relief or gratification during or immediately after it. Classified under F63 (e.g. pathological gambling, pathological stealing, trichotillomania).
Source basis
WHO ICD-10 international classification structure and code/title (ICD-10 Browser, 2019 English release).
Original educational synthesis, informed by general published clinical-education understanding of ICD-10 F60-F69; no verbatim CDDG or DCR text is reproduced. See Sources and Method for the full policy.
Last reviewed: 2026-09-17. Full policy: Sources and Method.
Educational resource only. This page and its cases teach ICD-10 classification reasoning using fictional scenarios. It does not diagnose real people and should not be used to assess yourself or anyone else. A person's gender identity or sexual orientation is not itself a disorder. If you or someone you know is struggling with a pattern of behaviour, an urge you find hard to control, or distress related to discrimination or how you are treated by others, please seek prompt, respectful professional support.