Sheehan’s syndrome (SS) is a rare but serious cause of hypopituitarism that results from ischemic necrosis of the pituitary gland following severe postpartum hemorrhage. Its diagnosis is frequently delayed due to nonspecific symptoms such as lactation failure and amenorrhea. This report presents a 42-year-old Bangladeshi woman with Sheehan’s syndrome who developed persistent endocrine deficiencies, metabolic derangements, and recurrent infections due to prolonged nonadherence to hormone replacement therapy. The case highlights the importance of early recognition, patient education, and lifelong follow-up in preventing long-term morbidity.

A 42-year-old woman from Noakhali, Bangladesh, with a history of severe postpartum hemorrhage (1998), lactation failure, amenorrhea, and two stillbirths, presented in 2013 with generalized edema, weakness, and recurrent hyponatremia. Hormonal evaluation revealed secondary adrenal insufficiency (basal cortisol 30.6 nmol/L; 60-min post-ACTH 71.9 nmol/L), central hypothyroidism (free T4 0.24 ng/dL, TSH 0.31 µIU/mL), and secondary hypogonadism (low FSH, LH). MRI of the pituitary showed atrophy with cerebrospinal fluid filling the sella turcica, confirming the diagnosis of Sheehan’s syndrome. The patient was prescribed lifelong hormone replacement therapy: prednisolone 5 mg daily, levothyroxine 50 µg daily, and cyclic estrogen–progesterone therapy. However, she was poorly adherent and discontinued treatment in favor of alternative medicine.

Over the next 13 years, the patient suffered recurrent hyponatremia, weakness, and infections due to untreated hormone deficiencies. At age 55, she was re-admitted with recurrent respiratory infections, tinea corporis, and uncontrolled diabetes mellitus (random blood glucose 18.0 mmol/L, HbA1c 11.6%). She was restarted on physiologic-dose prednisolone and levothyroxine; glycemic control was achieved with insulin, metformin, and linagliptin. Postmenopausal estrogen–progesterone therapy was withheld per guidelines. With appropriate replacement and infection management (ceftriaxone, itraconazole, luliconazole), her condition improved significantly.

Sheehan’s syndrome may present years after postpartum hemorrhage with variable pituitary hormone deficiencies. Lifelong, sequential hormone replacement—glucocorticoid before thyroid—is essential to prevent adrenal crisis and metabolic complications. This case emphasizes that nonadherence to therapy can lead to persistent endocrine dysfunction, recurrent infections, and poor quality of life. Early diagnosis, comprehensive counseling, and structured follow-up are critical to achieving optimal long-term outcomes.