en Internal Medicine Case Report/Case Series Type 1 diabetes (T1D) is an autoimmune assault on pancreatic β-cells characterized by a decrease in insulin production. The worldwide incidence rate of T1D is reportedly increasing. In parallel with the increase of T1D, diabetic ketoacidosis (DKA) and hyperosmolar hyperglycemic state (HHS) also appear as two risk factors for hyperglycemia. This case report presents a T1D patient with DKA and HHS who was finally discharged after recovery. Diabetic ketoacidosis, Hyperosmolar hyperglycemic state, Type 1 diabetes 52 56 http://tbsrj.mazums.ac.ir/browse.php?a_code=A-10-3379-12&slc_lang=en&sid=1 Alireza Kashanizadeh S.john66888@gmail.com 100319475328460030141 100319475328460030141 Yes Department of Internal Medicine, School of Medicine, Ganjavian Hospital, Dezful University of Medical Sciences, Dezful, Iran Ahmad Reza Salmanpour dr.salmanpour@yahoo.com 100319475328460030142 100319475328460030142 No Department of Internal Medicine, School of Medicine, Ganjavian Hospital, Dezful University of Medical Sciences, Dezful, Iran Nasim Shirin Sahrae Drn.shirin1398@gmail.com 100319475328460030143 100319475328460030143 No Department of Internal Medicine, School of Medicine, Ganjavian Hospital, Dezful University of Medical Sciences, Dezful, Iran Mohammad Firoozbakht mFiroozbakhtdums@gmail.com 100319475328460030144 100319475328460030144 No Student Research Committee, Dezful University of Medical Sciences, Dezful, Iran Hamid Karimi HAMIDKARIMI0641@GMAIL.com 100319475328460030145 100319475328460030145 No Department of Internal Medicine, School of Medicine, Ganjavian Hospital, Dezful University of Medical Sciences, Dezful, Iran