Using the example if hitting is extreme, though.
Mood, can change how we communicate, so unless you are aware that you are in a changed/less tolerant state, you may be snappier, or be anxious, so that changes behaviour.
I didn't suffer during my pregnancies, or from PMT, but I did when I entered the Peri Menopause.
I hadn't realised how my personality was changing, luckily I had friends and family around me that pointed it out.
I have learned to control my moments of anxiety and panic attacks (all hormonal), I now only have very mild anxious moments.
There are times when I feel irrationally angry, I don't show it in any way than being quiet, or possibly looking grumpy.
Even not being cheerful, or smiling is taken offence to, though.