A 10-year-old girl with red eyes and hypothyroidism

Objective: Hypothyroidism has many causes and manifestations in children. One of the causes is autoimmunity, which is known as autoimmune thyroiditis or Hashimoto thyroiditis. Pseudotumor cerebri is a rare manifestation of Hashimoto thyroiditis. Here we report a 10-year-old girl with asymptomatic papillary edema who was treated with levothyroxine and acetazolamide. Case Presentation: A 10-year-old girl suffered from left eye trauma while playing volleyball and went to an ophthalmology center due to redness in the same eye. During the examination, they noticed a bilateral optic disc swelling without ocular inflammation and the other eye examination was within normal limits. Encephalopathy may rarely occur during autoimmune thyroiditis, which is known as Hashimoto encephalopathy, and it is stated that the autoimmune disorder is not related to the thyroid dysfunction characterized by the symptoms of decreased level of consciousness and seizures. Conclusion: The diagnosis of hypothyroidism in children is usually made by examining the thyroid-stimulating hormone (TSH), and T4 in which TSH is elevated and T4 is decreased as in our patient.