21Symptoms, signs or clinical findings, not elsewhere classified Mental or behavioural symptoms, signs or clinical findings MB25Symptoms or signs involving form of thought MB25.0Symptoms or signs of thought disorder
MB25.02
category
Disorganised thinking
Definition A disturbance in the associative thought process typically manifested in speech in which the person shifts suddenly from one topic to another that is unrelated or minimally related to the first. The individual gives no indication of being aware of the disconnectedness or illogicality of their thinking.
Also indexed as
Disorganised thinking disorganised speech loose associations thought derailment
Nearby in Symptoms or signs of thought disorder
International Classification of Diseases, Eleventh Revision (ICD-11), World Health Organization (WHO) 2019/2021, https://icd.who.int/browse11. Licensed under Creative Commons Attribution-NoDerivatives 3.0 IGO (CC BY-ND 3.0 IGO).
Release 2026-01.
View this entity in the official WHO ICD-11 browser .
This page reproduces WHO classification content for reference. It is not
medical advice and must not be used to diagnose or treat. For coding
decisions, consult the official release and your national coding guidelines.
About · Data & methodology ·
Privacy · Contact