Exploring the Triad of Thyroid Dysfunction, Chronic Diarrhea and Anemia

Abstract

Hyperthyroidism, a disorder characterized by excessive thyroid hormone production, typically presents with many symptoms including weight loss, tremors, and heat intolerance. However, in rare instances, it can manifest solely as chronic diarrhea, posing a diagnostic challenge. This case study aims to highlight an unusual presentation of hyperthyroidism and underscore the importance of considering thyroid disease in the differential diagnosis of chronic gastrointestinal symptoms. We present the case of a fifty-year-old woman who, six months prior to her ER visit, had been experiencing severe weight loss and diarrhea along with anemia. Despite her lack of typical hyperthyroidism symptoms, a thorough investigation revealed that hyperthyroidism was the underlying cause of her gastrointestinal issues. This case illustrates that hyperthyroidism can present atypically, solely as chronic diarrhea. The patient's anemia was linked to iron deficiency, worsened by chronic gastrointestinal loss and the hyper metabolic state induced by hyperthyroidism. Treatment of the hyperthyroidism led to significant improvement in her gastrointestinal symptoms and correction of the anemia. This case underscores the critical need to include thyroid disease in the differential diagnosis for patients with chronic diarrhea and weight loss, even in the absence of typical hyperthyroid symptoms. Early recognition and appropriate management of hyperthyroidism can significantly improve patient outcomes by alleviating gastrointestinal manifestations and correcting associated anemia. Clinicians should maintain a high index of suspicion for thyroid dysfunction in patients presenting with unexplained chronic diarrhea and weight loss to ensure timely and accurate diagnosis and treatment.