Aphasia after stroke: what it is and how speech therapy can help

A stroke occurs every six minutes in Spain. Many survivors face one of the least visible but most impactful consequences of brain injury: the loss of language. If a loved one has stopped speaking normally, confuses words, cannot understand what is said to them, or can no longer write as before, they may be experiencing aphasia.

The good news is that aphasia is treatable. Specialist speech therapy in neurorehabilitation can restore, fully or partially, the ability to communicate.

What is aphasia?

Aphasia is an acquired language disorder that appears following a lesion in the dominant hemisphere of the brain — usually the left hemisphere. It does not affect intelligence: the person continues to think normally, but loses the "key" that allows them to turn thoughts into words or understand the words of others.

It is important to distinguish aphasia from dysarthria (difficulty articulating due to muscle weakness) or dementia. Aphasia is specifically a language disorder — oral and/or written — resulting from a focal brain lesion, with stroke (cerebrovascular accident) being its most common cause.

Most common types of aphasia

Broca's aphasia (non-fluent)

The person speaks with great effort, using few words and short sentences, although they usually understand fairly well. It is common for them to feel frustrated, knowing what they want to say but being unable to express it fluently.

Wernicke's aphasia (fluent)

Speech is fluent but contains errors: incorrect words, invented words (neologisms) or even meaningless sentences (jargon aphasia). Comprehension is severely affected, which can cause confusion for both the person and their environment.

Global aphasia

This is the most severe form: it profoundly affects both expression and comprehension. It usually occurs following extensive lesions of the left hemisphere.

Anomic aphasia

The person speaks fluently and understands well, but has difficulty finding specific words (anomia). This is the mildest and most common form in advanced stages of recovery.

How does aphasia affect daily life?

Aphasia is not just a clinical communication problem. It represents a radical transformation of everyday life: not being able to make a phone call, not understanding the doctor, not reading the newspaper, not writing a message to one's children. The emotional impact is enormous: depression, social isolation, and loss of identity are frequent consequences for both the patient and their family.

That is why speech therapy rehabilitation does not work on language in the abstract, but on functional communication in real contexts of the patient's life.

The role of speech therapy in aphasia rehabilitation

The speech therapist specialising in brain injury designs an individualised intervention programme that includes:

Comprehensive language assessment. Standardised tests such as the Boston Diagnostic Aphasia Examination (BDAE) or the Western Aphasia Battery (WAB) are used to determine the type and severity of aphasia and establish therapeutic objectives.

Evidence-based language therapy. Techniques such as Melodic Intonation Therapy (MIT), PACE therapy (Promoting Aphasic Communicative Effectiveness), or lexical access treatment therapy have demonstrated efficacy in improving verbal production.

Augmentative and Alternative Communication (AAC). When oral language is severely compromised, alternative resources are developed: gestures, communication boards, mobile apps, or voice-generating devices to ensure the person can express their needs.

Family guidance. The family is an essential part of the rehabilitation team. Carers are trained in communication strategies that facilitate everyday interaction and create a communicatively enriched environment.

When should rehabilitation begin?

Neuroplasticity — the brain's ability to reorganise and create new connections — is at its highest in the first months after a stroke. For this reason, speech therapy intervention should begin as soon as possible, ideally within the first 24-72 hours after the patient's medical stabilisation.

However, this does not mean it is too late if the stroke occurred months or years ago. The adult brain maintains some plasticity throughout life, and there is solid evidence that speech therapy rehabilitation produces improvements even in chronic phases.

What results can be expected?

Recovery depends on multiple factors: the location and extent of the lesion, the patient's age, the time elapsed before the start of treatment, the intensity of rehabilitation, and environmental support. Many patients recover a functional level of communication that allows them to resume an active and satisfying life, although communication is not always fully restored to its pre-stroke level.

The goal of speech therapy is not only to recover as much language as possible, but to return the patient the ability to participate in their life: conversing with their family, managing their needs, returning to work if possible.

Request an assessment in Málaga

If you or a family member has had a stroke and is experiencing communication difficulties, do not wait. Early speech therapy assessment is the first step towards recovery. At my practice in Málaga, we conduct a complete evaluation and design a personalised treatment plan adapted to the needs and context of each patient.