Higher than normal levels of blood glucose, known as hyperglycemia, can develop in middle-aged or older cats, neutered males, and cats experiencing high stress levels, notes PetMD. Any cat breed can develop hyperglycemia. While elevated blood sugar levels are often temporary, they can signify diabetes in some cats.
Hyperglycemia in cats can be triggered by stress, a reaction to medication, infections, or eating foods high in glucose, according to PetMD. Common symptoms include increased thirst and urination, weight loss or obesity, depression and an increased appetite. Blood tests and a urine analysis are required to determine if the high blood-sugar level is temporary or is caused by an undiagnosed condition or disease.