Hi, Regarding being moody. I have been so moody and had such strong mood swings over the last year (as my panic disorder has gotten worse) that my husband actually started doing research on the internet about mood disorders! He thought I had an actual mood disorder. The truth is, I don't actually have a mood disorder but...depression, irritability and intense feelings of anger and helplessness have happened as a result of my life being so severely restricted and debilitated by panic disorder.
Having said that, I found out a few months ago that overgrowth of candida (yeast) in the gut also causes mood swings, depression and anxiety. I saw a naturopathic doctor, did an internal yeast cleanse for three weeks and have felt much better.
The other thing that I think is valid is that our bodies being constantly barraged by stress hormones is going to have some physiological effect. For example: after a full blown panic attack, I feel exhausted, very vulnerable and weepy so, I am not exactly "myself" when it comes to dealing with others, which some may interpret as me being "moody".