In cases of severe hypoglycemia or hyperglycemia: - Hypoglycemia: Administer fast-acting carbohydrates such as glucose tablets, juice, or candy. If the patient is unconscious, seek emergency medical help and consider glucagon injection if trained to do so. - Hyperglycemia: Encourage the patient to drink water and monitor their blood sugar levels closely. Seek medical attention if levels remain high or if the patient shows signs of diabetic ketoacidosis.