Cognitive communication disorder

Also called Cognitive-communication difficulties, CCD, Right hemisphere communication disorder

When memory, attention, speed or reasoning disrupt communication and the language itself is fine: the difficulty that tests miss and families feel.

What it is

Cognitive communication disorder is a communication difficulty caused by changes in thinking rather than in language. The person can find words, build sentences and pronounce them. What's affected is the cognition a conversation depends on: paying attention, remembering what was said, keeping up with the pace, planning what to say, reading the other person, taking turns, staying on topic, and knowing when to stop.

It follows brain injury, right-hemisphere stroke, dementia, MS, Huntington's, Parkinson's, brain tumours and their treatment, and some mental health conditions. It's the communication change families most often describe with "he's not himself" and clinicians most often miss, because a language test comes back clear.

Who it can help

People with any acquired brain condition whose conversations have changed in ways nobody has named, and the families and colleagues who've noticed. Rehabilitation and care staff who need a word for what they're seeing.

It isn't aphasia, where words and grammar are affected, or dysarthria, where speech is unclear, though a person can have any combination. And it's not a personality change, though it can look like one, and that distinction matters for how the family responds.

How it works

Different cognitive changes give different pictures. Reduced attention: losing the thread, missing what was said in noise, unable to follow a group. Memory: repeating, forgetting what was agreed. Slowed processing: replies that arrive late, missing jokes, exhaustion after a short conversation. Executive changes: tangents, over-talking, difficulty organising a story, not noticing the listener has had enough. Right-hemisphere changes: flat tone, missed sarcasm, taking things literally, not reading faces.

Speech and language therapy assesses conversation itself, often by recording one, and treatment is a mix of strategies for the person (notes, one topic, pausing, self-checking questions) and training for the partner, which has the stronger evidence. Environment does a lot: a quiet room and one person at a time turns a lost conversation into a possible one.

Fatigue sits over everything. The person who was fine at ten in the morning is not the same communicator at four.

Getting started

Record, with permission, five minutes of ordinary conversation and watch it back together. Naming one pattern is the start of managing it.

Agree one strategy per pattern: a signal for "you've gone off topic", a shared notebook for what was decided, conversations that matter scheduled for the morning and one-to-one. Keep the television off.

Ask the GP or the neurology or rehabilitation team for a speech and language therapy assessment that names cognitive communication specifically, and for neuropsychology alongside. At work, write down the adjustments and use Access to Work for what they cost.

Where to get help

Headway covers cognitive communication after brain injury in detail and runs a helpline and local groups. The Stroke Association covers it after stroke, and the condition charities each cover their own. NHS speech and language therapy and neuropsychology are via the hospital team or GP, and the RCSLT explains what a therapist can assess.