Yes and No
The DX of a learning disability
implies a child is not able to process information in a certain area at the level expected of their intellegence.
This implies a kids brain is wired differently & may or may not improve in the area. About 40% of add kids have an ld & treatment of the add may permit the child to focus more thinking time on a problem and do better. I know of no meds that fix an ld.