Abnormal temper tantrums before menstruation are considered to be PMS. There are various factors that cause PMS. Ovarian hormones are a necessary factor in PMS, which means that unstable hormone levels in the body are the main factor. However, this factor alone is not enough to cause PMS. So PMS susceptibility factors may have a lot to do with their own neurosensitive constitution, like changes in brain neurotransmitter activity and other abnormalities, such as vitamin B6 deficiency. So there are these aspects leading to PMS: first, brain neurotransmitter theory is related; second, ovarian hormone theory is related. Third, psychosocial factors are related. Fourth, prostaglandin action is related. Fifth, vitamin B6 deficiency, etc. is related. So there are many factors that lead to abnormal temper before menstruation, mainly related to the above factors.