What are M-I/D/Ds? M-I/D/Ds, also known as MIDDS, are Mental Illnesses/Disorders/Disabilities.  ---- I really think that's the only question I need to put on here...  Anyway; ask away! However, please be polite and respectful- I will not hesitate to call you out if you say something ableist, but please take it as criticism; this way you too can stop others from potentially harming people with MIDDs.