A 21 year-old Caucasian girl presented to her pediatrician with a three day history of pre-tibial numbness extending from her knee to her ankle. She denied numbness in this area or elsewhere on her body before. She denied any traumatic event. She noted a 70-pound unintentional weight loss over the past 9 months. She described the numbness as "pins and needles". She denied pain, muscle weakness, difficulty walking, altered mental status, polydipsia, polyuria, and polyphagia. She denied tobacco, alcohol, or drug use. Her past surgical history was unremarkable. Her family history was significant for sarcoidosis, thyroid cancer, and T1DM.Physical exam revealed an afebrile, well appearing girl in no acute distress. Her blood pressure was 126/80, weight 158 pounds, and height 5'6. Her cardiovascular, pulmonary, and abdominal exams were unremarkable. Her neurologic exam was remarkable for pretibial peripheral sensory neuropathy. Testing sharp and dull palpation reproduced feeling "pins and needles" consistent with the area of numbness. Cranial nerves, deep tendon reflexes, muscle tone, and other neurological parameters were normal.A magnetic resonance image of the brain and knee with basic screening labs including vitamin B12/folate levels, sedimentation rate, thyroid stimulating hormone, T3, and T4 were ordered. The hepatic and thyroid panels were within normal limits. Her labs were significant for a mild hyponatremia (132 mmol/L) and hypochloremia (94 mmol/L), and glucose of 535 mg/dL. On the basis of these findings, the diagnosis was confirmed.
DISCUSSIONBased on her family history for autoimmune disorders, we considered the possibilities of multiple sclerosis and thyroid cancer, but her laboratory suggested diabetes. The patient was admitted to the hospital and managed with IV fluid hydration, electrolyte balance, glucose control, and diabetic education. Endocrinology confirmed her peripheral neuropathy was related to her newly diagnosed diabetes.Type 1 diabetes mellitus is one of the most common chronic, autoimmune diseases in childhood in the United States, with the incidence in non-Hispanic white children and adolescents as 23.6 per 100000 per year, and the prevalence is 2.0 per 1000.1 The criteria for diagnosis
ABSTRACTType 1 Diabetes Mellitus (T1DM) is an autoimmune destruction of B-islet cells. T1DM usually presents in children less than 15 years old with polyuria, polydipsia, polyphagia, and weight loss. Complications include diabetic ketoacidosis, hypoglycemia, retinopathy, neuropathy, nephropathy, and atherosclerosis. We present an unusual initial presentation for T1DM in a 21-year old Caucasian girl with pretibial numbness for three days.