A 49-year-old woman presented with a tingling sensation in her middle finger that was usually worse in the morning and improved during the day. She also complained of excessive thirst and frequent urination at night. The patient had a history of pituitary adenoma, thyroid ablation, and Graves’ disease. She had no family history of diabetes and presented with no neurological symptoms, dysuria, or hematuria.

Her vital signs were normal, and she had a BMI of 21.7 . She was regular in taking her thyroid medications. Laboratory findings Glucose level: 249 mg/dL Vitamin B12: 996 pg/mL Thyroid stimulating hormone: 25.67 u[iU]/mL HbA1C: 11.5% Fasting glucose: 248 mg/dL Free T3: 2.42 pg/mL Free T4: 1.7 ng/dL Renal functions: Normal Islet cell antibodies and glutamic acid decarboxylase antibodies: Positive What is your diagnosis? (Answer is posted in the comment section below!) Source: Page et…