Background: Thyroid hormones play an important role in the body. As a result, any imbalance in these hormones can affect all physiological and metabolic functions of the body, including the health of the reproductive system. Objectives: Assessing the menstrual pattern and investigating the differences in effect of thyroid gland dysfunction on menstrual pattern between case and control. Methodology: A descriptive (case-control) study implemented for 100 women in 15-45 years of reproductive age group, from two hospitals in Salah Al-Din Governorate/Iraq. The study conducted from the period (31th of October 2021 to 2th of August 2022) included obtaining a blood sample for TSH, fT3 and fT4 tests on 50 women with thyroid disorders and 50 women in control group. Results: The finding shows the highest percentage, in the case group (74%) had an abnormal cycle, and most types of menstrual abnormalities were menorrhagia (32%), oligomenorrhea (18%), and polymenorrhea (10%), compared with control group (82%) were having  a normal cycle. Conclusions: The highest percentage was abnormality pattern and menorrhagia was their commonest menstrual disorders in case group compared with control group.

Background: Thyroid disorders are more common in women, and it is associated with infertility, menstrual irregularities, and pregnancy loss among women of childbearing age. Objectives: Comparison thyroid function test between patient group and control group among women had thyroid disorders. Materials and methods: A sample of a case-control study consisting of (100) clients from two hospitals in Salah al-Din Governorate/Iraq. The study was conducted during the period from(31th of October 2021 to 2th of August 2022) included obtaining a blood sample for thyroid function tests. Data were analyzed using SPSS software v.25.0 and Microsoft office 2010.