Some women simply have periods worse than others... hence why tampons come in different methods depending on how much a person bleeds, ie. light or heavy during their period cycle. The mood swings are much the same... yes, the symptoms produced by PTSD can most certainly affect their mood, but thats not PTSD itself. For example, if you heal all your trauma, thus your symptoms will also disappear, then PTSD by itself being present doesn't alter the mood of the female during menstral cycle. It is more that the symptoms of anxiety and depression are present, so that just kind off puts the iceing on the cake so to speak.