Aphasia Definition

Learn about aphasia, a language disorder caused by brain damage, affecting communication skills. Discover types, causes, case studies, and statistics.

What is Aphasia?

Aphasia is a language disorder that occurs due to damage to the brain’s language centers, affecting a person’s ability to communicate effectively. This condition can impact speaking, understanding, reading, and writing skills.

Types of Aphasia

  • Broca’s Aphasia: Difficulty speaking fluently, but comprehension is intact.
  • Wernicke’s Aphasia: Fluent speech, but it lacks meaning and comprehension is impaired.
  • Global Aphasia: Severe impairment in all language skills.

Causes of Aphasia

Aphasia can result from a stroke, traumatic brain injury, brain tumor, or degenerative disease. The severity and type of aphasia depend on the location and extent of damage to the brain.

Case Studies

John suffered a stroke that damaged his language centers, leading to Broca’s Aphasia. Despite knowing what he wants to say, he struggles to find the right words and form coherent sentences.

Emma developed Wernicke’s Aphasia after a head injury, making her speech unintelligible and causing her to have difficulty understanding others.


According to the National Aphasia Association, approximately 2 million Americans have aphasia, with 180,000 new cases diagnosed each year. It is more common in older adults, but can also affect children and young adults.

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