Inability to Write. — A condition following certain injuries of the brain[1] by which the person afflicted loses the power of conveying his thoughts in writing. He may even be unable to form a single letter of the alphabet and still realize his inability.[1] Agraphia often appears with a number of disorders that can be caused by injuries: aphasia, dysarthria, agnosia, and apraxia. Albert Pitres, a french neurologist, presented a case of "pure" agraphia in 1884, which he saw as evidence of localisation of function within the cortex - function that could be impaired by injury.
Excerpts from J. H. Greer's "A Physician in the House: for family and individual consultation", published in 1897. Annotations provided throughout. This is not medical advice - if you're sick, see a doctor.