Relationship of the lunar cycle and the presentation of individuals with psychiatric problems to an accident and emergency department: a case control study

The aim of this study was to examine the relationship between the existence of a full moon and the presentation of patients seeking psychiatric assistance from an accident and emergency department. The main hypothesis is that more patients present with psychiatric problems at an accident and emergency department when the moon is full as opposed to the same day of the remaining weeks of the same month when it is not. A case-control design was used. It was concluded that the phase of the full moon is not associated with more referrals of patients with psychiatric problems from an accident and emergency department No extra members of mental health staff are needed during the days of the full moon as no extra referrals are expected. However, further education of staff as to the effects of the moon on human behaviour is necessary.