IIRC, he had a diagnosis of BPD (Borderline) and was put on medication. The term "borderline" was used by Freud (and nearly everyone after him) to indicate the borderline territory between full psychosis and mere neurosis. It is therefore quite tricky to diagnose and treat.
Medications are used today to treat it (the newer anti-psychotics seem to be only somewhat effective, but they are effective enough that they are in wide use).
tom domains in BPD. Methods: The literature was searched for placebo-controlled, randomized clinical trials (PC-RCTs) on the effectiveness of antipsychotics regarding cognitive perceptual symptoms, impulsive behavioral dyscontrol, and affective dysregulation (with subdomains depressed mood...
journals.lww.com
This study shows that the main symptom controlled by the anti-psychotics is borderline anger (often called "rage" in the literature), but also cognitive perceptual symptoms (what some of us would call delusions or derealization), mood disturbances and overall (global) functioning (includes more normative cognition and behavior; such as having more routine results on various tests of mental functioning, including ones involving ECG's and CAT scans).
He had gone off his meds.
I am so angry at this man, I can't even put it into words. And that's exactly what he wants us all to feel and he especially wanted his poor wife to feel. These people can pass for normal, his BPD was particularly severe. It often comes packaged with narcissistic and antisocial traits, as we see here.
The fact that he might be dead is infuriating. He should be alive and medicate and made to think about what he has done.
IMO.