Hi Kepha–
Years ago I had some issues where I sought a physical outlet when I got angry. I never hurt anyone nor came close and I got over it after a few years. The most annoying (and humiliating) incident was when I got angry in a parking lot, threw my keys onto the tarmac, and then had to spend 20 minutes figuring out how to get them out from under some stranger’s car, since they had gone too far for me to reach.

Is your wife in her early 20s perhaps? I was in my late teens when it started, but I was probably 22 before it went away completely. (Well, I say “went away completely,” but I still sometimes get so angry and frustrated that I want to throw something, but it’s pretty rare, and almost always I can restrain myself from doing anything at all. I threw a butter knife at the floor once about 4 years ago, but that is as bad as it gets–and there wasn’t anyone else around at the time.)
My guess would be depression, and I have to respectfully disagree with those who say that it will probably turn into domestic violence. It may, but you would need more information before you could say it actually will. For example, I also used to take out my anger on inanimate objects, but not as a substitute for hurting people. What I mean is, when I threw my keys at the ground, it wasn’t because I was restraining myself from throwing them at a person, and when I pounded a wall it wasn’t because I would rather have been pounding a person. I just had this huge energy and anger and wanted/needed to make a noise, move violently, etc. I was not, BTW, trying to win anything by it. I knew I was more likely to win an argument if I kept calm, but I just
couldn’t.
What I did when I was trying to control it before it went away, was I had a stack of magazines that I used to throw against a wall, in a room by myself. It didn’t hurt or break anything (although it did mark the wall with ink from the magazines). It satisfied the need to be somewhat violent. If you have a room that you don’t use much, or don’t care about the walls too much, you might start saving up some magazines. They make a lovely noise, but it’s really hard to damage the drywall with a magazine, no matter how hard you throw it.
If you can find a counselor who is compatible with religious belief, that may help. I had a few sessions with someone (< 10) and it helped me. It helped especially because it was understood from the start that there wouldn’t be many sessions (it was free counseling from the University, and you couldn’t have more than 10

).
Also, if she is anything like I was, being calm at her is probably the worst possible thing to do. Just go away, trying not to seem patronizing if you can, because after all you have faults too, seeing as you are human. Then you can talk about whatever it is when her brain will be doing the talking rather than her spinal cord. I’m not sure that I would advise locking her in a room like a 5-year-old (even if she is behaving like one) but locking
yourself in a room would be fine. If she follows you and tries to get in, then probably my advice isn’t any good, and you are dealing with some very different phenomenon than what I went through.
Best wishes,
–Jen