Uncontrolled type 2 diabetes with hyperglycemia: what to know

When insulin does not work effectively or the body cannot make enough of it, glucose stays in the bloodstream instead of moving into cells. You may notice thirst, frequent urination, tiredness, blurred vision, or slow-healing cuts, although high blood sugar can also cause few obvious symptoms. Ongoing elevation can affect blood vessels, nerves, kidneys, eyes, and the feet. Peripheral neuropathy can reduce protective sensation, while chronic kidney disease may develop silently. Infection, missed medicines, illness, stress, steroid treatment, or changes in eating and activity can push readings higher.

Arrange a review with your clinician to check your readings, medicines, injection technique if relevant, nutrition, activity, blood pressure, and kidney health. Keep a record of glucose results, meals, symptoms, and doses, and take it to the appointment. Follow the prescribed plan and do not double a missed dose unless instructed. Drink fluids unless a clinician has limited them, inspect your feet, and treat cuts promptly. Ask for an individual sick-day plan before you become unwell; never stop prescribed diabetes medicine without advice.

Seek urgent medical help for vomiting, severe abdominal pain, deep or rapid breathing, confusion, marked drowsiness, inability to keep fluids down, or signs of dehydration. Get prompt assessment for a foot wound, spreading redness, warmth, swelling, fever, or pus because cellulitis can progress quickly. Sudden weakness, facial drooping, trouble speaking, or new vision loss may indicate a stroke and needs emergency care. A glucose reading that stays high despite your agreed plan also warrants same-day clinical advice.

Ask what range your readings should meet, how often to test, what to do when you are ill, and which symptoms should trigger urgent help. Clarify whether your medicines need adjustment and whether you need checks for kidney disease, nerve changes, eye problems, or circulation.