According to the dyslexia association of Denmark:

Dyslexia is a “persistent impairment that has major consequences for handling written language (reading, spelling and written wording). Therefore, dyslexia is often experienced as a major disability”.

They define it further:

Dyslexia can also have consequences for linguistic areas other than purely reading and spelling, for instance it can produce problems with both written and spoken syntax, as well as problems with reading comprehension and professional reading. Add to this the social and psychological effects of dyslexia: limitations on educational choices, lack of confidence and a significantly greater time consumption for anything related to reading and written wording.

A more formal definition of dyslexia is then offered:

The Danish National Lexicon contains a definition and description of dyslexia / dyslexics. The definition was formulated by Professor Dr. philosopher Carsten Elbro in 1992:

“Dyslexia: marked difficulties in learning to read and write, due to slow and imprecise translation of letters and letter sequences into language sounds. Dyslexics have particular difficulty with words that they have not seen before. The reading and spelling errors are often at odds with common connections between letter and sound, such as cold reads that could, and you written yours”.

Dr Carsten Elbro

(Læse- og stavefejlene er ofte i modstrid med almindelige forbindelser mellem bogstav og lyd, fx kulde læst som kunne, og dig skrevet din).

In 1990, 7% of adult Danes described themselves as dyslexic; around 3% reported severe difficulties reading everyday texts.

See for instance: