Autoimmune hypothyroidism and intermittent ovarian failure - Case Report

Area of Science:

• Reproductive Endocrinology
• Gynecology
• Internal Medicine

Background:

• A 35-year-old woman presented with secondary amenorrhea and infertility.
• Her medical history included hypothyroidism managed with levothyroxine.
• Initial investigations ruled out pregnancy and anatomical causes for her symptoms.

Observation:

• Elevated follicle-stimulating hormone (FSH) levels (100 mIU/ml) led to a diagnosis of premature ovarian failure (POF).
• Thyroid autoantibodies (anti-TPO) were elevated, suggesting an association with autoimmune thyroid disease.
• The patient experienced a temporary return of menstrual cycles, complicating the diagnosis and management.

Findings:

• Diagnosis of POF was confirmed by persistently high FSH levels and clinical presentation.
• The case highlights the potential link between POF and autoimmune conditions like Hashimoto's thyroiditis.
• Differential diagnosis posed challenges, particularly in distinguishing POF from Savage syndrome.

Implications:

• This case underscores the importance of considering autoimmune comorbidities in POF diagnosis.
• It emphasizes the complexities in reproductive counseling for patients with fluctuating ovarian function.
• The study contributes to understanding the variable clinical course and diagnostic nuances of POF.