Subclinical Hypothyroidism in Perimenopausal Abnormal Uterine Bleeding Patients.

Background  Abnormal uterine bleeding (AUB) can be very troublesome and is common in women with thyroid dysfunction. The current study aimed to assess the incidence of subclinical hypothyroidism in women with perimenopausal AUB. Methodology  A cross-sectional study was conducted at Hayatabad Medical Complex (HMC), Peshawar, Pakistan, between September 2020 to February 2021. All outdoor female patients with complications in the obstetrics and gynecology department, aged between 40 to 55 years of age, and no obvious cervical and genital lesions were included in the study. Patients with a history of suspected inflammatory disease, use of oral contraceptives, and malignant lesions of the cervix were excluded from the study. All cases were evaluated for AUB and their thyroid profile was evaluated. Data regarding menstrual irregularities were recorded in a pre-defined proforma and clinical examination was performed. Results A total of 500 women were enrolled with a mean age of 47.2 ± 7.3 years. Of these, 234 (46.8%) women were overweight and the mean levels of the thyroid-stimulating hormone were 4.4 ± 2.5 mIU/L. The mean triiodothyronine and thyroxine were 3.2 ± 1.9 and 1.5 ± 0.7 pmol/L, respectively. The rate of subclinical hypothyroidism was 33%. It was shown that the body mass index was significantly correlated with subclinical hypothyroidism (p=0.03). Furthermore, the rate of oligomenorrhea was significantly higher in patients with subclinical hypothyroidism (p=0.05). Conclusion  This study highlights the association between thyroid dysfunction in women with menstrual disorders. Screening and surveillance of thyroid-related abnormalities are warranted in patients with menstrual irregularities to avoid complications of the disease.