About one in three people who have a stroke develop aphasia, a language problem that affects speaking, understanding, reading or writing while leaving intelligence intact. Speech and language therapy helps: a 2016 Cochrane review of 57 randomised trials found it improves functional communication, and pooled patient data link the largest gains to starting early, giving enough hours and including home practice. Recovery is fastest in the first months, but improvement continues beyond six months, so it is not too late to start.
If your family member suddenly develops new slurred or jumbled speech, facial drooping, arm weakness, loss of balance or loss of vision, treat it as a possible new stroke: call 108 or 112 immediately. Do not wait for a therapy appointment.
What Is Aphasia, and Is It the Same as Confusion or Dementia?
Aphasia is a language disorder caused by damage to the language areas of the brain, usually on the left side. As the American Speech-Language-Hearing Association's public guidance puts it, aphasia does not affect intelligence or how a person thinks (ASHA): the person knows what they want to say; the words are hard to find, form or understand.
Families often mistake aphasia for confusion. The differences:
| Feature | Aphasia | Delirium or dementia |
|---|---|---|
| Onset | Sudden, with the stroke | Delirium: hours to days, fluctuating; dementia: gradual over months to years |
| Thinking and memory | Largely preserved for non-language tasks; the person recognises family, follows routines, reacts appropriately | Memory, attention and judgement are affected, not just language |
| What is impaired | Words: finding them, saying them, understanding them, reading and writing | Many abilities, including orientation to time and place |
A person can have both, and sudden new confusion after stroke (delirium) can signal infection, dehydration or a medicine side effect, so it needs a doctor the same day. Both language and cognition should be assessed at the first visit.
Types of aphasia
A study of 270 consecutive stroke patients with aphasia in Copenhagen found that, in acute first-ever stroke, the most common types were global (32%), anomic (25%), Wernicke's (16%) and Broca's (12%) (Pedersen et al., 2004). In plain terms:
- Global aphasia affects speaking and understanding severely.
- Broca's (non-fluent) aphasia means effortful, halting speech with relatively good understanding.
- Wernicke's (fluent) aphasia means fluent but often meaningless speech with poor understanding.
- Anomic aphasia means speech is largely normal except for word-finding difficulty.
The type is not fixed. In the same study, aphasia always shifted towards a milder form over the first year: global aphasia fell from 32% to 7% of cases, while anomic aphasia rose to 29%.
How Common Is Aphasia After Stroke?
A 2016 systematic review of 50 studies found median aphasia frequencies of 30% in acute stroke settings and 34% in rehabilitation settings (Flowers et al., 2016). The Cochrane review uses the same approximate figure of one third (Brady et al., 2016). In a community-based Danish cohort of 881 stroke patients, 38% had aphasia on admission and 18% still had it at discharge (Pedersen et al., 1995).
The 2016 review also found that people with aphasia had higher odds of disability at 28 days (OR 1.5) and 2 years (OR 1.7), used more rehabilitation services and returned home less often.
Does Speech and Language Therapy Actually Work?
Yes. The Cochrane review pooled 57 randomised trials with 3,002 participants: compared with no therapy, speech and language therapy produced clinically and statistically significant gains in functional communication, reading, writing and expressive language. Higher intensity, dose or duration gave better functional communication, though more people dropped out of the most intensive programmes (Brady et al., 2016).
The RELEASE collaboration then pooled individual data from 959 people across 25 trials to ask how much therapy is enough (RELEASE Collaborators, 2022). The greatest gains in overall language were associated with:
- a total of more than 20 to 50 hours of therapy;
- 2 to 4 hours a week, or 9 or more hours a week;
- therapy on 3 to 5 or more days a week;
- mixed receptive and expressive work, tailored to the person's own daily needs, with prescribed home practice.
No comprehension gains were seen with 20 hours or less in total, under 3 hours a week, or 3 or fewer days a week, which is more therapy than usual services provide in most countries. At SENSE Health, inpatient speech-language therapy is charged per session, separately from the inpatient package; before admission, families see in writing exactly what the package includes and what is charged separately, so there are no surprises on the bill.
Does timing matter?
An earlier RELEASE analysis of 943 people found that starting therapy within one month of stroke, and younger age, were associated with the largest language gains, but it also found that improvement continued, to a lesser extent, beyond six months (RELEASE Collaborators, 2021). So start early if you can, and do not give up if you could not.
What Does Recovery Usually Look Like?
Every stroke is different, and nobody can promise a timeline. What the research does show is a general pattern:
| Phase after stroke | What studies have observed | Source |
|---|---|---|
| First 2 weeks | Initially mild aphasia reached stable language (95% of cases) within 2 weeks | Pedersen 1995 |
| 2 to 6 weeks | Moderate aphasia reached stable language within 6 weeks | Pedersen 1995 |
| 6 to 10 weeks | Severe aphasia reached stable language within 10 weeks (later gains are still possible) | Pedersen 1995; RELEASE 2021 |
| 1 to 6 months | Largest therapy-related gains when started within a month; greatest for younger people | RELEASE 2021 |
| 6 months to 1 year and beyond | Aphasia type shifts to milder forms; aphasia frequency 2 to 12% lower than at baseline by 1 year; therapy gains continue, smaller with age and time | Pedersen 2004; Flowers 2016; RELEASE 2021 |
Initial severity was the strongest predictor of outcome in both Danish cohorts; age mattered little.
Which Therapy Approaches Are Used, and What Is the Evidence?
A good speech-language therapist chooses from several approaches depending on the type and severity of aphasia, and changes the mix as the person improves.
| Approach | What it involves | What the evidence says |
|---|---|---|
| Constraint-induced language therapy (CILT / ILAT) | Intensive, massed practice of spoken language in small groups, discouraging pointing or gesture | 8 RCTs reviewed: works as well as other intensive therapies; massed practice seems to be the useful component; not clearly superior to other approaches (Zhang et al., 2017) |
| Melodic intonation therapy (MIT) | Using melody and rhythm to help people with severe non-fluent aphasia produce phrases | 22 studies, 129 participants: small-to-moderate effect in RCTs, mainly on repetition tasks; weaker evidence for everyday conversation (Popescu et al., 2022) |
| Semantic feature analysis (SFA) | Describing the features, use and category of a word to rebuild word-finding | 21 studies, 55 people: naming of trained words improved in 82% of participants; small effect size overall (Efstratiadou et al., 2018) |
| Supported Conversation for Adults with Aphasia (SCA) | Training the conversation partner, not just the patient | Controlled trial: trained partners revealed more of the person's competence and improved the person's own message exchange (Kagan et al., 2001) |
| Augmentative and alternative communication (AAC) | Communication boards, picture cards, phone apps | Used as a bridge so the person can express needs while speech recovers; it does not replace speech practice |
| Home practice and computer-based drills | Prescribed daily exercises between sessions | In the RELEASE analysis, therapy with prescribed home practice was associated with the greatest gains |
Can rTMS or tDCS Speed Up Language Recovery?
These are brain stimulation techniques used alongside, never instead of, speech therapy. The evidence is promising but not settled.
- tDCS (transcranial direct current stimulation): a 2019 Cochrane review of 21 trials (421 participants) found no evidence that tDCS improves functional communication, but moderate-quality evidence that it may improve naming of nouns at the end of treatment (Elsner et al., 2019).
- rTMS (repetitive transcranial magnetic stimulation): a 2026 meta-analysis of 26 randomised trials found a significant positive effect on language recovery, with the greatest gains when inhibitory stimulation was applied over the right frontal language area during the subacute phase (Wei et al., 2026).
SENSE Health offers rTMS as an adjunct for selected patients after medical assessment, charged per session and listed on the package sheet before admission, and always paired with speech therapy, which remains the treatment with the strongest evidence.
What If Your Family Speaks Kannada and English (or Three Languages)?
Many Bengaluru households switch between Kannada, English, Hindi, Tamil or Telugu in one conversation, and in aphasia the languages can be affected, and recover, differently.
A 2024 meta-analysis of word-finding treatment in 39 bilingual people with aphasia found that gains were largest in the language used in therapy, with only small carry-over to the other language (Lee & Faroqi-Shah, 2024). The authors concluded that treatment should be provided in each language the person needs. At SENSE Health, our speech therapists work in Kannada, so therapy can be given in the language your family member uses at home.
Practical advice for families:
- Tell the therapist every language the person spoke before the stroke, which one they used at home, which at work, and which they read and wrote in.
- Assessment should be done in the person's strongest pre-stroke language, not only in English.
- Agree with the therapist which language to focus on first, usually the one the person needs most day to day, then add others.
How Families Can Support Communication at Home
Therapy hours are limited; conversation at home is not. ASHA's advice to communication partners (ASHA):
- Get the person's attention before you speak, and turn off the TV or radio.
- Slow down and use short, plain sentences; do not shout.
- Offer choices ("tea or coffee?") rather than open questions, and accept yes/no, pointing, gestures or writing as answers.
- Give extra time. A long silence while the person searches for a word is normal.
- Do not finish their sentences, and let mistakes pass; understanding each other matters more than correct grammar.
Frustration and low mood are common when words will not come. If you notice persistent sadness or withdrawal, raise it with the team; our guide to post-stroke depression and emotional recovery explains what helps.
When to Seek Help Urgently
- New or sudden worsening of speech, understanding, weakness, face droop or vision: call 108 or 112. This may be a new stroke.
- Coughing or choking with food or drink, or a wet-sounding voice after swallowing: ask for a swallowing assessment. Aphasia and swallowing problems often occur together; see our guide to swallowing therapy after stroke.
Getting Started With Aphasia Rehabilitation in Kalyan Nagar
SENSE Health is at AVR Heights, 100 Feet Road, HRBR Layout 1st Block, Kalyan Nagar, Bengaluru 560043, easy to reach from Indiranagar, Banaswadi and Hennur, with families from Kammanahalli, Hebbal and Horamavu attending speech-language therapy as inpatients or in the OPD.
At the first visit, bring the discharge summary, CT or MRI reports and the current medicine list, and tell us which languages your family member used before the stroke. A speech-language therapist assesses language, communication and swallowing, and our consultant physiatrist, Dr. Vaibhav Shivram Lokhande, reviews the overall rehabilitation plan, including cognition and mood. If inpatient rehabilitation is advised, you see in writing what the package includes and what, like speech and swallow therapy, is charged separately per session, before you sign anything; inpatients have 24/7 doctors and a 24/7 emergency response team. Family training in supported conversation is part of the programme. Our first 90 days after stroke checklist covers what else to organise in the early weeks.
OPD hours: Monday to Saturday, 9 AM to 7 PM. The initial consultation is free.
Call +91 96633 34659, WhatsApp us, email listen@sensehealth.co.in, or get directions.
Sources
- Brady MC, Kelly H, Godwin J, Enderby P, Campbell P. Speech and language therapy for aphasia following stroke. Cochrane Database of Systematic Reviews. 2016.
- Flowers HL, Skoretz SA, Silver FL, et al. Poststroke aphasia frequency, recovery, and outcomes: a systematic review and meta-analysis. Archives of Physical Medicine and Rehabilitation. 2016.
- Pedersen PM, Jørgensen HS, Nakayama H, Raaschou HO, Olsen TS. Aphasia in acute stroke: incidence, determinants, and recovery. Annals of Neurology. 1995.
- Pedersen PM, Vinter K, Olsen TS. Aphasia after stroke: type, severity and prognosis. The Copenhagen aphasia study. Cerebrovascular Diseases. 2004.
- RELEASE Collaborators. Dosage, intensity, and frequency of language therapy for aphasia: a systematic review-based, individual participant data network meta-analysis. Stroke. 2022.
- RELEASE Collaborators. Predictors of poststroke aphasia recovery: a systematic review-informed individual participant data meta-analysis. Stroke. 2021.
- Zhang J, Yu J, Bao Y, et al. Constraint-induced aphasia therapy in post-stroke aphasia rehabilitation: a systematic review and meta-analysis of randomized controlled trials. PLoS One. 2017.
- Popescu T, Stahl B, Wiernik BM, et al. Melodic Intonation Therapy for aphasia: a multi-level meta-analysis of randomized controlled trials and individual participant data. Annals of the New York Academy of Sciences. 2022.
- Efstratiadou EA, Papathanasiou I, Holland R, Archonti A, Hilari K. A systematic review of semantic feature analysis therapy studies for aphasia. Journal of Speech, Language, and Hearing Research. 2018.
- Kagan A, Black SE, Duchan FJ, Simmons-Mackie N, Square P. Training volunteers as conversation partners using "Supported Conversation for Adults with Aphasia" (SCA): a controlled trial. Journal of Speech, Language, and Hearing Research. 2001.
- Elsner B, Kugler J, Pohl M, Mehrholz J. Transcranial direct current stimulation (tDCS) for improving aphasia in adults with aphasia after stroke. Cochrane Database of Systematic Reviews. 2019.
- Wei KC, Chen KY, Chen C, Fan YT, Cheng Y. Repetitive transcranial magnetic stimulation for post-stroke aphasia: a meta-analysis of stimulation and hemispheric dynamics. Annals of Physical and Rehabilitation Medicine. 2026.
- Lee S, Faroqi-Shah Y. A meta-analysis of anomia treatment in bilingual aphasia: within- and cross-language generalization and predictors of the treatment outcomes. Journal of Speech, Language, and Hearing Research. 2024.
- American Speech-Language-Hearing Association. Aphasia. ASHA public information. Accessed 2026.
This article is for general education and does not replace advice from your own doctor. If symptoms are sudden or severe, call 108 or go to the nearest emergency department.
