i think its current name is just a mashup of all the previous iterations  attention deficit disorder seems to fit but doesnt account for the differences in inattentive and hyperactive  so they threw the hyperactive part into the overall name  well then that gets confusing because adhd type primarily inattentive is a contradiction  i guess its shorter than attention deficit hyperactivity disorder hold the hyperactivity but still  i jokingly call it sosspaced out syndromelol