Logorrhea
In psychology, logorrhea or logorrhoea is a communication disorder that causes excessive wordiness and repetitiveness, which can cause incoherency. Logorrhea is sometimes classified as a mental illness, though it is more commonly classified as a symptom of mental illness or brain injury. This ailment is often reported as a symptom of Wernicke's aphasia, where damage to the language processing center of the brain creates difficulty in self-centered speech.
Characteristics
Logorrhea is characterized by "rapid, uncontrollable, and incoherent speech". Occasionally, patients with logorrhea may produce speech with normal prosody and a slightly fast speech rate. Other related symptoms include the use of neologisms, words that bear no apparent meaning, and, in some extreme cases, the creation of new words and morphosyntactic constructions. From the "stream of unchecked nonsense often under pressure and the lack of self-correction" that the patient may exhibit, and their circumlocution we may conclude that they are unaware of the grammatical errors they are making.Examples of logorrhea
When a clinician said, "Tell me what you do with a comb", to a patient with mild Wernicke's aphasia, which produces the symptom of logorrhea, the patient responded:In this case, the patient maintained proper grammar and did not exhibit any signs of neologisms. However, the patient did use an overabundance of speech in responding to the clinician, as most people would simply respond, "I use a comb to comb my hair."
In a more extreme version of logorrhea aphasia, a clinician asked a male patient, also with Wernicke's aphasia, what brought him to the hospital. The patient responded:
In this example, the patient's aphasia was much more severe. Not only was this a case of logorrhea, but this included neologisms and a loss of proper sentence structure.