Identified by Oswald Berkhan in 1881, the term 'dyslexia' was later coined in 1887 by Rudolf Berlin in Stuttgart, Germany. Rudolf Berlin used the term dyslexia to describe partial reading loss in an adult patient. He used the term to refer to a case of a young boy who had a severe impairment in learning to read and write in spite of showing typical intellectual and physical abilities in all other respects. https://en.wikipedia.org/wiki/History_of_dyslexia_research
"Congenital Word Blindness"
W. Pringle Morgan published a description of a reading-specific learning disorder in a report titled "Congenital Word Blindness". This described the case of a boy who had not yet learned to read, yet showed normal intelligence.This led Morgan to conclude the etiology of reading disability to be congenital and attributed it to defective development of the left angular gyrus of the brain. https://en.wikipedia.org/wiki/History_of_dyslexia_research