* this illness is commonly refered to as 'E.D.'
* E.D. victims are often girls with abusive or overbearing fathers
* her father's nickname is 'E.D.'
* at the very least, Dick has got an abusive and overbearing personality
If you wrote a a show with this kind of plotline, it would be considered too far-fetched.
E.D. is more commonly associated with another medical condition.