A specific learning difficulty (SpLD) is a difference or difficulty with some particular aspects of learning. The most common SpLDs are Dyslexia, Dyspraxia, Attention Deficit Disorder/ Attention Deficit (Hyperactivity) Disorder, Dyscalculia and Dysgraphia. Sometimes there is a diagnosis of Specific Learning Difficulties, rather than Dyslexia or Dyspraxia because the individual experiences a unique combination of difficulties which cannot be readily categorized but may include features of one or more recognized SpLDs.

https://www.kent.ac.uk/teaching/networks/ltn/documents/2014-15/18-Sept-2014-SpLD-handout-L-Regan.pdf

Further reading in relation to ELT

https://www.cambridge.org/gb/files/2415/7856/0079/CambridgePapersInELT_SpLDs_2020_ONLINE.pdf