I think it is one of the hardest parts of being a woman trying to distinguish between mental thought and hormones. This has baffled me for years! I, too, have had those scary moments of thinking I'm going to hurt/ruin my children or my marriage, even. I don't think necessarily as drastic as Andrea's situation, but times of darkness nonetheless.
I have to ask myself, though, why one person can "pull themselves out of it" while others continue to suffer? Is it only hormone related? Sometimes, yes. But I don't think all the time. I've had a very interesting couple of years that have caused me to think more about my hormones as well. And what's been most interesting is that after a major paradigm shift recently in my life, the "bad times" haven't been as bad. Does that make sense? I had a mental shift, which thus shifted the hormonal responses. I still had symptoms (bad PMS) but my husband and I dealt with the situation with much clearer vision rather than how we'd unproductively and distructively handled it in the past. I don't know if that's making any sense. But with this experience I'm just wondering where the mental and the hormonal meet.???
Maybe I just need to read the book. :-)