Dysgraphia is nearly always accompanied by other
learning disabilities and/or neurodevelopmental disorders such as
dyslexia,
attention deficit hyperactivity disorder, or oral and written language learning disability
(OWL LD) and this can impact the type of dysgraphia a person has.
Tourette syndrome,
ASD and
dyspraxia are also common diagnoses among dysgraphic individuals. but there are three principal subtypes of dysgraphia that are recognized.
Dyslexic There are several features that distinguish dyslexic-dysgraphia (sometimes called
linguistic dysgraphia) from the other types. People with dyslexic-dysgraphia typically have poor oral and written spelling that is typically phonemic in nature. Their spontaneously written work is often illegible, has extra or deleted syllables or letters, and contains unnecessary capitalization or large spaces in the middle of words which can make each individual word unrecognizable. They may also insert symbols that do not resemble any letter of the alphabet. Writing production generally requires long periods of contemplation and correction. Motor-dysgraphics struggle with proper finger grip and writing is often slanted due to holding a pen or pencil incorrectly.
Spatial A person with spatial dysgraphia has an impairment in the understanding of space. This impaired spatial perception causes illegible spontaneously written work, illegible copied work, abnormal spacing between letters and majorly impaired drawing abilities. They have normal oral spelling and normal finger tapping speed, suggesting that this subtype is not fine motor based.
Dyscravia In 2010, the Dyscravia or voicing substitution dysgraphia subtype was proposed. The subtype presents with differentiated voicing substitution, where individuals make mistakes when transferring from
phonemes to
graphemes (ie. "goat" would be mistakenly written as "coat"). Dyscravia does not appear to result from impairments in
auditory processing or in
speech production. It can occur with a completely intact graphemic buffer, phonological output
lexicon, phonological output buffer, and allographic stage – the function that processes the voicing feature for writing may be selectively impaired without deficits in other functions of the conversion route. Dyscravia may or may not be accompanied by a parallel
reading disability.
Miscellaneous Other subtypes and informal classification systems have been proposed by researchers; this includes but is not limited to phonological dysgraphia, deep dysgraphia and surface dysgraphia. ==Signs and symptoms==