Paragraphia is a condition which results in the use of unintended letters or

phonemes A phoneme () is any set of similar speech sounds that are perceptually regarded by the speakers of a language as a single basic sound—a smallest possible phonetic unit—that helps distinguish one word from another. All languages con ...

words A word is a basic element of language that carries meaning, can be used on its own, and is uninterruptible. Despite the fact that language speakers often have an intuitive grasp of what a word is, there is no consensus among linguists on its ...

syllables A syllable is a basic unit of organization within a sequence of speech sounds, such as within a word, typically defined by linguists as a ''nucleus'' (most often a vowel) with optional sounds before or after that nucleus (''margins'', which are ...

when writing. This is typically an acquired disorder derived from

brain The brain is an organ (biology), organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. It consists of nervous tissue and is typically located in the head (cephalization), usually near organs for ...

damage and it results in a diminished ability to effectively use written expression. Paragraphias can be classified as function of the type of writing errors: literal paragraphias, graphemic paragraphias and morphemic paragraphias.

References

Neurological disorders Mental disorders {{neuroscience-stub