Health · England
Aphasia and changes in language
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This guide is for people in England.
Sudden problems speaking or finding words can mean a stroke.
Call 999 immediately, even if the problems stop.
A drooping face or weak arm can mean a stroke.
Do not drive yourself to hospital.
Aphasia affects language.
It can affect speaking, understanding, reading and writing.
Dysphasia is another word for aphasia.
Dysphagia means swallowing problems.
These words mean different things.
Dysplasia is a different medical word.
Ask your clinician to explain the word they used.
Ask your GP about gradual language changes too.
Do not assume changes are just a learning disability.
A speech and language therapist can help.
They can help you find useful ways to communicate.
Pictures, gestures or a communication device may help.
People should give you time to respond.
Problems speaking do not mean you cannot make decisions.
Ask for support to understand and share your choices.
Ask for support with feelings and relationships too.
You should still be included in conversations.
What you can do next
Ask for help with changes in communication.
Sudden stroke symptoms need 999 immediately.
Read NHS information about aphasia Web pageThis link opens another website.
It may use harder words.
More useful links
- Aphasia information and support organisations Web page
NHS information includes links to aphasia and stroke support groups.
- Helping someone communicate Web page
Practical ways to make a conversation easier.
- Communication aid options Web page
Information for users, families and communication partners.
These links open other websites.
They may use harder words.
Aphasia, dysphasia and changes in language
Recognise new language problems, get urgent help when needed and support everyday communication.
Children and adults · England
Sudden changes: call 999
New, sudden difficulty speaking, finding words or understanding, especially with face drooping, weakness or numbness in an arm or one side, can signal a stroke. Sudden blurred vision or sight loss can also be a sign. Call 999 immediately; do not wait for a routine appointment or assume it is the person’s learning disability. Get help even if symptoms stop. Do not drive yourself to hospital.
What aphasia means
Aphasia is a difficulty using or understanding language caused by damage to language areas of the brain. It can affect speaking, understanding, reading and writing in different combinations. It may follow a stroke or brain injury, or occur with another brain condition. Someone with a learning disability can develop aphasia too. Compare changes with their usual communication and ask for a clinical assessment.
Similar words with different meanings
Dysphasia is another term used for aphasia. Dysphagia means difficulty swallowing and needs its own assessment. Dysplasia is a different medical word concerning abnormal cells or development of tissue or body structures; its meaning depends on the condition, such as hip development or cell changes. It is not another name for a language disorder. Ask the clinician to write and explain the exact word in a letter.
Gradual or ongoing changes also need assessment
Make a GP appointment for new or worsening language changes that are not sudden. Describe when they began, which tasks are harder and any other changes. Bring the person’s usual communication plan and examples if helpful. The doctor may arrange investigations or specialist referral. Do not put a new difficulty down to ageing, distress or an existing disability without considering other causes.
Ask for speech and language therapy
A speech and language therapist can assess communication, agree meaningful goals and help the person and communication partners use effective methods. Ask the GP, hospital or community service how to access this. Therapy may involve language practice, alternative communication and support for everyday situations. Goals should reflect what the person wants to do, not only performance on clinic tests.
Make conversation easier
Reduce distractions and allow time. Use a natural adult tone, clear short sentences and one topic at a time. Offer writing, drawing, gesture or pictures if these help; do not assume reading is unaffected. Check you understood rather than pretending or repeatedly correcting. Include the person in conversation and ask what support they prefer before finishing sentences for them.
Use aids that fit the person
Communication aids may include a personalised book, photos, written key words or an electronic device. A therapist can assess vision, movement, language and how the aid works in real situations. Practise together and keep it available where needed. Agree how the person can communicate urgent needs, pain, yes, no and uncertainty; check these signals are reliable rather than assuming every response means agreement.
Protect participation and decision-making
Difficulty speaking does not by itself mean someone cannot understand or decide. Give accessible information, time and effective communication support. For a particular decision, any capacity assessment must follow the Mental Capacity Act and must not be based on the diagnosis alone. Ask staff to document successful methods and use them for treatment choices, complaints and everyday decisions.
Support wellbeing and changing goals
Communication changes can affect confidence, relationships and mood. Ask about peer support and accessible emotional support. Recovery and progression differ with the cause; some people improve over time, while others need changing support for a progressive condition. Review useful goals and fatigue with the therapy team. Keep chosen social activities and relationships central to the plan.
Words you could use
“This is how I communicated before, and these are the changes: … Please assess the cause and arrange communication support that helps me take part.”
More useful links
- Aphasia information and support organisations Web page
NHS information includes links to aphasia and stroke support groups.
- Helping someone communicate Web page
Practical ways to make a conversation easier.
- Communication aid options Web page
Information for users, families and communication partners.
These links open other websites.
They may use harder words.
Where the information comes from
Links checked 1 November 2026.
These links open other websites.
They may use harder words.
- NHS: aphasia Web page
Language difficulties, causes, stroke warning signs and therapy.
- RCSLT: aphasia Web page
Language impairment, participation and speech and language therapy.
- NHS: communication difficulties Web page
Respectful conversation, avoiding assumptions and communication aids.
- RCSLT: communication aids Web page
Individual assessment, appropriate access and communication partner support.
- NIDCD: aphasia Web page
Communication partner approaches and long-term support; England service routes are described separately.
- NHS: swallowing problems Web page
Dysphagia means swallowing difficulty.
- NCI: dysplasia definition Web page
Meaning in cell and tissue assessment; not a language disorder.
- NHS: developmental dysplasia of the hip Web page
Example showing that dysplasia also describes abnormal joint development.
- Mental Capacity Act 2005, section 1 Web page
Presume capacity and take practical steps to support a decision.
- NHS: transient ischaemic attack (TIA) Web page
Call 999 for current stroke or TIA symptoms, including when they disappear while awaiting help.