Barw Barw Medical Journal 2960-1959 2023 09 20 Adult-Onset Bartter Syndrome: A Case Report 10.58742/zr0j8145 eng Soran Mohammed Gharib Shar Hospital, Department of Rheumatology, Sulaimani, Kurdistan, Iraq. soran.gharib@gmail.com Swara Ali Mawlud Suleimani Centre for Heart Disease, Qanat Street, Sulaimani, Kurdistan, Iraq. swara.mawlud@gmail.com Shaho F. Ahmed Smart Health Tower, Madam Mittrand, Sulaimani, Kurdistan, Iraq. shahomedi@gmail.com Zana B. Najmadden Research Center, University of Halabja, Halabja, Kurdistan, Iraq. zana14@gmail.com Aland Salih Abdullah College of Medicine, University of Sulaimani, Sulaimani, Kurdistan, Iraq. aland.abdullah@gmail.com Dana T. Gharib Smart Health Tower, Madam Mittrand, Sulaimani, Kurdistan, Iraq. dana.gharib@gmail.com Hoshmad R. Asaad Smart Health Tower, Madam Mittrand, Sulaimani, Kurdistan, Iraq. hoshmand.asaad@gmail.com Berun A. Abdalla Smart Health Tower, Madam Mittrand, Sulaimani, Kurdistan, Iraq. berun.anwer95@gmail.com Fahmi H. Kakamad College of Medicine, University of Sulaimani, Sulaimani, Kurdistan, Iraq. fahmi.hussein@univsul.edu.iq 2023 08 22 Introduction Bartter syndrome is a rare genetically inherited salt-wasting disorder that is typically seen in children and neonates with association to many morbidities. We present a case of Bartter syndrome in an adult who showed excellent response to treatment. Case presentation The patient was a 23-year-old male presenting with polyuria, polydipsia, nocturia, and fatigue, especially within the lower limbs for the last two years but no history of vomiting. He was clinically diagnosed with Bartter syndrome and received conservative management with a good response. Conclusion Bartter syndrome is a rare disease. It has a wide range of clinical presentations. It can be diagnosed clinically and confirmed by genetic testing. Conservative management has a good clinical outcome.