Mark 9:18 records the convulsions the spirit causes, which occur again here as the spirit departs.

Mark 9:20 describes the initial convulsion upon seeing Jesus; here a final convulsion accompanies the spirit's exit.

Mark 1:26 records the same pattern — unclean spirit convulsing and crying out upon exit — an earlier exorcism parallel.

Luke 4:35 has a demon throwing a man down before leaving, exactly the same pattern as the convulsion here.

Luke 9:39 is the parallel account of the same event, describing the spirit seizing and convulsing the boy.

Luke 9:42 recounts the same exorcism, with the demon throwing the boy down and convulsing him.

Acts 8:7 describes unclean spirits coming out with loud cries, echoing the loud cry and exit here.