Diabetes can be life-threatening and can get worse over time. You have to consult a diabetes specialist if you experience low blood sugar/diabetic ketoacidosis or recurrent low blood sugar level/hypoglycaemia. In general, when you always have high blood sugar levels at the same time each day or high blood sugar levels throughout the day, you should need to see a diabetes specialist. An endocrinologist help assists with type 1 diabetes, while an endocrinologist is perfect for people with type 2 diabetes.