When evaluating the prognosis of a patient, the main contributing participant factors that influence the extent of neuroplasticity, or the brain's ability to change are: age, lesion location, pre-existing cognitive status, motivation, overall health, and interaction amongst these. After brain damage, initial signs of<unk>  may appear within the first two days due to brain swelling (cerebral edema). With some time and natural recovery, impairment presentation may progress into expressive aphasia (most commonly) or receptive aphasia. Due to the size and location of the lesion associated with<unk> , the prognosis for language abilities is poor. Research has shown that the prognosis of long-term language abilities is determined by the initial severity level of aphasia within the first four weeks after a stroke. As a result, there is a poor prognosis for persons who retain a diagnosis of aphasia after one month due to limited initial language abilities. Nonetheless, in the first year post-stroke, patients with<unk>  showed improvement in their Western Aphasia Battery (WAB) scores from baseline. When compared to individuals with Broca’s, Wernicke’s, anomic, and conduction types of aphasia, those with Broca’s aphasia showed the best rate and extent of improvement followed by<unk> . The rate of improvement in language function was highest in the first four weeks after stroke. Although the prognosis for persons diagnosed with<unk>  is poor, improvement in varying aspects of language is possible. For example, in 1992, Ferro performed research in which he studied the recovery of individuals with acute<unk> , resulting from the five different lesion sites. The first lesion site was in the fronto-tempo-parietal region of the brain; patients with lesions in this location saw the least amount of gains out of all of the participants in the study, and they often never recovered from<unk> . However, the second lesion site was the anterior, suprasylvian, frontal part of the brain; the third lesion site was the subcortical infarcts; and the fourth lesion site was the posterior, suprasylvian, parietal infarcts. Participants with lesions two, three, and four often recovered to a less severe form of aphasia, such as Broca's or transcortical. The fifth lesion site was a double lesion in both the frontal and temporal infarcts; patients with lesions at this site showed slight improvement. However, studies show that spontaneous improvement, if it happens, occurs within six months, but complete recovery is rare. Studies have shown that persons with<unk>  have improved their verbal and nonverbal speech and language skills through speech and language therapy. One study examined the recovery of a group of individuals who were classified as having<unk>  at 3 months poststroke. The individuals received intensive speech and language intervention. The results of the study illustrated that all of the patients showed improvement. The greatest area of improvement was in auditory comprehension, and the least in the use of propositional speech. After 6 months poststroke, the individuals showed an increased use of gestures to communicate, as their communication skills remained severely impaired. During therapy, most progress is seen within the first 3 years, but it is possible for language abilities to continuously improve at a steady rate due to long-term intensive language intervention. While improvement in language abilities is possible with intervention, only 20 percent of persons diagnosed with<unk>  achieve functional use of language. Communication of basic needs and the comprehension of simple conversations on highly familiar topics, are examples of common functional language use for this population.
Global aphasia
Anomic aphasia
Expressive aphasia
Receptive aphasia
Jargon aphasia
Progressive nonfluent aphasia
Conduction aphasia
Transcortical sensory aphasia