learning disability
From Longman Dictionary of Contemporary Englishlearning disabilityˈlearning disaˌbility noun [countable, uncountable] a mental problem that affects someone’s ability to learnExamples from the Corpuslearning disability• No sign of a definite learning disability.• More than a million people in Britain have some degree of learning disability, with some 160,000 severely affected.• The parents sought the advice of others, including three psychologists, learning disability specialists, and other parents.