'ASD-related' originates from modern English, specifically the acronym 'ASD' (from the phrase 'autism spectrum disorder') combined with the adjective 'related' to indicate association.

'ASD-related' was formed in late 20th to early 21st century usage by attaching 'related' to the medical initialism 'ASD' (itself a shortening of 'autism spectrum disorder') to create a compound adjective meaning 'connected with ASD'.

Initially coined to denote an association with the diagnostic term 'autism spectrum disorder', its meaning has remained essentially the same: 'having a connection to ASD'.