My mom was a drinker and may have had BPD tendencies to boot. It was the elephant in the room type situation, except for frequent instances of things getting impossible to ignore and her husband would blow up at her, yelling and screaming in a very threatening way and i'd have to worry in case things got physical. I actually helped cover up for her at times, to try and avoid these kind of incidents. My father divorced her when i was 11 or 12. He was a more restrained type, little overt rowing took place in my presence, he'd just turn very stone faced and tight-lipped with everyone when it was bothering him, which was often !
I'd say i've got avoidant personailty disorder tendencies and i can overreact severely to criticism, i'm also rather wary of people and displays of strong emotion scare me. It could be genetic, or it could be from spending early years with an unpredictable stay-at-home mum - never really knew what to expect when i stepped inside the house.