Dyslexia means difficulty with words. Dyslexic people are inherently neurodivergent and, as such, they will always be dyslexic, just as someone is autistic for life.

If dyslexia is correctly identified in a child or an adult, that person can be taught in an adapted way that respects their neurological difference, enabling them to work with words  (saying them, spelling, writing, reading etc) far more effectively, thereby minimising its impact as a learning difficulty.

Dyslexia is a commonly co-occurring condition for autistic people and ADHDers. Not all dyslexics have other neurodivergencies.