Which of the following symptoms is commonly seen in patients with hyperosmolar hyperglycemic nonketotic syndrome ( HHNS )?

Mr. Santos, a 65-year-old male with a history of type 2 diabetes, presents to the emergency department with extreme thirst, frequent urination and weakness. His blood glucose level is 600 mg / DL. The healthcare provider suspects hyperosmolar hyperglycemic nonketotic syndrome ( HHNS ).