The prenatal effects of many drugs are not well documented, nor are there many links between Drug A and Resulting Disease B.  It is more of a "take any drug from this extremely large list while pregnant, and the baby has an increased chance of developing some sort of neurological/developmental problem in general".  The only one I know of that has been documented several times is smoking cigarettes during pregnancy.  Nicotine supposedly directly increases the baby's chances of AD(H)D, depression, anxiety, and other neurological diseases that aren't in the class of say, autism, schizophrenia, etc.