Menstrual cycle phase and psychiatric admissions.

Area of Science:

• Psychiatry
• Gynecology
• Chronobiology

Background:

• Previous research indicates a link between the menstrual cycle and psychiatric admissions.
• The para-menstrual phase (premenstrual and menstrual periods) is often associated with increased psychiatric events.

Purpose of the Study:

• To investigate the association between menstrual cycle phase and emergency psychiatric admissions.
• To compare the menstrual cycle phase distribution of psychiatric patients with a control group.

Main Methods:

• Assessed menstrual cycle phase in 51 women admitted for emergency psychiatric care.
• Compared patient cycle phase distribution with 113 hospital staff controls assessed randomly.
• Utilized chi-squared tests to analyze phase distribution differences.

Main Results:

• 47% of psychiatric admissions occurred during the para-menstrual phase, compared to 22% in controls (P = 0.002).
• 33.3% of psychiatric admissions occurred within 4 days of menses onset.
• No significant differences were found based on psychiatric diagnosis, suicidality, or depression ratings.

Conclusions:

• Menstrual cycle entrainment and late luteal phase changes may exacerbate psychiatric disorders in vulnerable individuals.
• The effect appears independent of specific psychiatric diagnosis or severity indicators like depression ratings.