Palilalia is considered an aphasia, a disorder of language, and is not to be confused with speech disorders, as there is revue Neurologique, Volume 4 PDF difficulty in the formation of internal speech. Palilalia is defined as the repetition of the speaker’s words or phrases, often for a varying number of repeats.
Repeated units are generally whole sections of words and are larger than a syllable, with words being repeated the most often, followed by phrases, and then syllables or sounds. A 2007 case study by Van Borsel et al. AB, a 60-year-old male was diagnosed with idiopathic Parkinson’s disease and had noticed changes in gait, posture, writing, and speech. Analysis of AB’s speech therapy showed that his repetitions lasted from 1 minute 33 seconds to 2 minutes 28 seconds, ranging from 1 to 32 repetitions on some words, and differed from trial to trial. Pauses were present between each repetition, ranging from 0. Palilalia has been theorized to occur in writing and sign language.
A case study by Tyrone and Moll examined a 79-year-old right-handed deaf man named PSP who showed anomalies in his signing. The exact cause of palilalia is unknown. Palilalia also occurs in a variety of neurodegenerative disorders, occurring most commonly in Tourette syndrome, Alzheimer’s disease, and progressive supranuclear palsy. Maassen B, Kent R, Peters H, et al. Speech motor control: In normal and disordered speech. Repetitive verbal behaviors in free conversation with a person with progressive multifocal leukoencephalopathy. Acoustic features of palilalia: a case study ».