Aphasia

Aphasia is a language disorder that affects your ability to speak, understand, read or write. 

It often happens suddenly after a stroke, but it can also develop from a brain injury, tumor or neurological condition like Alzheimer’s disease. 

For many people, aphasia is one of the first signs that something is wrong. 

If speech becomes suddenly slurred, confused or hard to understand, call 911 right away. It could be a stroke. 

What is aphasia? 

Aphasia is a condition that affects how the brain processes language. 

It can make it difficult to: 

• Speak clearly 
• Understand what others are saying 
• Read or write 
• Find the right words 

Aphasia does not affect intelligence, but it can make communication challenging. 

What are the symptoms of aphasia? 

Aphasia symptoms can vary depending on the part of the brain affected. 

Common signs of aphasia include: 

• Trouble finding the right words 
• Speaking in short or incomplete sentences 
• Using incorrect or made-up words 
• Difficulty understanding conversations 
• Trouble reading or writing 
• Speaking fluently but without clear meaning 

Sudden symptoms may signal a stroke and require emergency care. 

When is aphasia a medical emergency? 

Call 911 immediately if aphasia symptoms start suddenly, especially with: 

• Facial drooping 
• Arm weakness 
• Slurred or confusing speech 
• Trouble understanding others 

These are signs of a possible stroke, where fast treatment can reduce brain damage. 

What causes aphasia? 

Aphasia happens when the parts of the brain responsible for language are damaged. 

Common causes include: 

• Stroke (most common cause) 
• Traumatic brain injury 
• Brain tumors 
• Neurological conditions such as Alzheimer’s disease or frontotemporal dementia 

The severity of aphasia depends on how much of the brain is affected. 

Types of aphasia 

There are several types of aphasia, based on which area of the brain is affected. 

Expressive aphasia (Broca’s aphasia) 

• Difficulty forming words and sentences 
• Speech is slow and effortful 
• Understanding is mostly intact 

Receptive aphasia (Wernicke’s aphasia) 

• Difficulty understanding language 
• Speech may be fluent but unclear or nonsensical 

Global aphasia 

• Severe difficulty with both speaking and understanding 
• Often caused by widespread brain damage 

Can aphasia be treated or reversed? 

Aphasia is treatable, and many people improve with therapy. 

Recovery depends on: 

• The cause (such as stroke or injury) 
• How quickly treatment begins 
• The severity of brain damage 
• Ongoing therapy and support 

Some people recover fully, while others continue to improve over time. 

How is aphasia treated? 

The main treatment for aphasia is speech language therapy. 

A speech language pathologist (SLP) helps people: 

• Improve speaking and word finding 
• Better understand language 
• Practice reading and writing 
• Use alternative communication strategies 

Treatment may include: 

• One-on-one therapy sessions 
• Group therapy 
• Communication tools or apps 
• At-home exercises 

Consistent therapy and practice can lead to meaningful improvement. 

Aphasia recovery after stroke 

Aphasia is common after stroke, and early treatment is key. 

Recovery often happens in stages: 

• Early improvement in the first few weeks 
• Continued progress over months or years 
• Ongoing gains with therapy and practice 

The brain can adapt and form new pathways, helping restore language skills over time. 

How to communicate with someone who has aphasia 

Aphasia affects the whole family, not just the person diagnosed. 

Tips for better communication: 

• Speak slowly and clearly 
• Use simple sentences 
• Give extra time to respond 
• Use gestures, pictures or writing 
• Avoid interrupting or correcting too quickly 

Support and patience can make a big difference in recovery. 

How aphasia affects families and caregivers 

Aphasia can be frustrating and emotional for both patients and loved ones. 

Family members may feel: 

• Confused or unsure how to communicate 
• Frustrated during conversations 
• Concerned about long-term recovery 

Read: How You Can Help a Loved One Who’s Struggling with Aphasia 

Working with a speech language pathologist can help families learn effective ways to communicate and support recovery. 

Care you can trust 

At Banner Health, our speech language pathologists provide personalized care to help people with aphasia rebuild communication skills and confidence. 

If you or a loved one has aphasia, early support can make a meaningful difference. Schedule an appointment to start a personalized treatment plan. 

Frequently asked questions about aphasia 

Is aphasia permanent? 

Not always. Many people improve with therapy, especially when treatment starts early. 

Does aphasia affect memory or intelligence? 

No. Aphasia affects language, not intelligence. 

How long does aphasia last after a stroke? 

Recovery varies. Some people improve within months, while others continue to recover over years. 

Can you have mild aphasia? 

Yes. Aphasia can range from mild word-finding difficulty to severe communication challenges. 

Bottom line 

Aphasia affects how you communicate, but with the right treatment and support, many people improve over time. Recognizing symptoms early, especially after a stroke, and starting speech therapy can help restore language skills and improve quality of life.