Acute aphasias
Expressive aphasia also known as Brocas aphasia, expressive aphasia is a non-fluent aphasia that is characterized by damage to the frontal lobe region of the brain. A person with expressive aphasia usually speaks in short sentences that make sense but take great effort to produce. Also, a person with expressive aphasia understands another persons speech but has trouble responding quickly. Receptive aphasia also known as Wernickes aphasia, receptive aphasia is a fluent aphasia that is categorized by damage to the temporal lobe region of the brain. A person with receptive aphasia usually speaks in long sentences that have no meaning or content. People with this type of aphasia often have trouble understanding others speech and generally do not realize that they are not making any sense. Conduction aphasia
Anomic aphasia
Global aphasia
Primary progressive aphasias
Progressive nonfluent aphasia
Semantic dementia
Logopenic progressive aphasia

Learning disability
Dyscalculia – an impairment in the systems used in communicating numbers
Dyslexia – an impairment in systems used in reading
Dysgraphia – an impairment in the systems used in writing

Speech disorders
cluttering - a syndrome characterized by a speech delivery rate which is either abnormally fast, irregular, or both. dysarthria - a condition that occurs when problems with the muscles that helps a person to talk make it difficult to pronounce words. esophageal voice - involves the patient injecting or swallowing air into the esophagus. Usually learnt and used by patients who cannot use their larynges to speak. Once the patient has forced the air into their esophagus, the air vibrates a muscle and creates esophageal voice.
The diagnoses are made more general in order to capture the various aspects of communications disorders in a way that emphasizes their childhood onset and differentiate these communications disorders from those associated with other disorders (e.g. autism spectrum disorders). Language disorder – the important characteristics of a language disorder are difficulties in learning and using language, which is caused by problems with vocabulary, with grammar, and with putting sentences together in a proper manner. Problems can both be receptive (understanding language) and expressive (producing language). Speech sound disorder – previously called phonological disorder, for those with problems with pronunciation and articulation of their native language. Childhood-Onset Fluency Disorder (Stuttering) - standard fluency and rhythm of speech is interrupted, often causing the repetition of whole words and syllables. May also include the prolongation of words and syllables; pauses within a word; and/or the avoidance of pronouncing difficult words and replacing them with easier words that the individual is better able to pronounce. This disorder causes many communication problems for the individual and may interfere with social communication and performance in work and/or school settings where communication is essential. Social (pragmatic) communication disorder – this diagnosis described difficulties in the social uses of verbal and nonverbal communication in naturalistic contexts, which affects the development of social relationships and dialogue comprehension. The difference between this diagnosis and autism spectrum disorder is that in the latter there is also a restricted or repetitive pattern of behavior.