There are various classifications of this disease. Major categories of the disease are known as fluent and non-fluent aphasia. Fluent aphasia results from damage to the temporal lobe of the brain; this type is also otherwise known as Wernicke’s aphasia (National Institute on Deafness and Other Communication Disorders, 2008). Patients with Wernicke’s aphasia often speak in long sentences that have no meaning at all, or use unnecessary or made-up words in their sentences. A type of non-fluent aphasia is known as Broca’s aphasia and this disorder is mainly due to damage to the frontal lobe of the brain. Patients with Broca’s aphasia often understand language and speak fairly well (National Institute for Deafness and Other Communication Disorders, 2008). However, they have trouble using and speaking the exact words that refer to their thoughts or emotions. Global aphasia results from damage to many parts of the brain controlling language. These patients have severe communication problems and are limited in their ability to express and understand language. Other types of aphasia manifest with different kinds of damages or language problems depending on which parts of the brain are affected (National Institute for Deafness and Other Communication Disorders, 2008).
Aphasia is caused by a variety of factors. Benson & Ardila (1996, pp. 69) discuss that it may be caused by (a) trauma from falls, accidents, or other injuries, (b) neoplasms, (c) infections, (d) other diseases which affect brain function. Neoplasms may infiltrate areas of the brain controlling speech and language. As these neoplasms grow, more physiologic functions eventually become affected, hence, the aphasia may gradually become more pronounced in patients with neoplasms (Benson & Ardila, 1996, p. 69). Intracranial infections also affect brain function through bacteria or virus. These infections sometimes cause abscesses which enlarge and compress into