The purpose of this paper is to inform others of how DMDD can go hand in hand with ASD, and what signs to look for, as DMDD is as I said a fairly new diagnosis. It is an important subject to me as my son is diagnosed on the spectrum and until recently with DMDD as well as PTSD. According to Haruvi-Lamdan, Horesh, Zohar, Kraus, and Golan (2020) although PTSD has not been widely studied as a co-occurrence with autism a study was done with 25 adults with ASD and 25 adults without in regards to s...