What is non-specific M.R.?
It is not always possible to precisely pinpoint the cause of M.R. even in the presence of laboratory diagnostic facilities with DNA and molecular studies. Some cases may show dysmorphic features, which only help in identifying the inherent condition or syndrome. It is not uncommon that a child with subnormal intelligence shows normal findings on medical, neurological and laboratory examinations and such cases of M.R. are referred to as non-specific or unknown M.R.
