Why diabetes needs extra attention while a wound heals

Diabetes management with a wound takes more attention than usual, because the two affect each other. High blood sugar makes it harder for the body to fight germs and build new tissue. A wound, especially an infected one, can push blood sugar up.

Recovery also changes your routine. You may move less, eat differently, sleep poorly or take new medications, and any of these can shift your numbers. For the background, see blood sugar and wound healing.

Who is on your diabetes care team

Several people may share the work, and they do not always hear from one another:

  • Primary care clinician. Often manages diabetes medications and orders lab tests.
  • Endocrinologist. A diabetes specialist some people see as well.
  • Diabetes educator or dietitian. Helps with meal planning, meters and sensors.
  • Podiatrist. Examines the feet and cares for nails and calluses.
  • Wound care clinician. Treats the wound and watches for infection.

Make sure each of them knows the wound exists. A specialist you see twice a year may have no idea that a foot wound started last month.

What can change your blood sugar during recovery

  • Infection. Blood sugar often rises when the body is fighting an infection. Readings that climb with no clear reason are worth reporting.
  • Less activity. Staying off a foot wound means less walking, and numbers may run higher.
  • Changes in eating. Eating less while taking the same diabetes medication can lead to low blood sugar.
  • New medications. Steroids raise blood sugar, and some other medicines can affect it too.

Do not adjust diabetes medication on your own in response to any of these. Report the pattern to the clinician who prescribes it and ask what to do.

What to track and bring to visits

A short record helps every clinician you see:

  • Blood sugar readings with the date and time, or the meter or sensor itself
  • Any low blood sugar episode: when it happened, how you felt and what you had eaten
  • Days when you missed meals or had little appetite
  • New medications, including antibiotics and steroids
  • Changes in the wound, such as more drainage, redness, smell or pain

Some practices offer remote patient monitoring, which sends home readings to the care team between visits.

Questions for the clinician who manages your diabetes

  1. What blood sugar range do you want for me while this wound heals?
  2. How often should I check, and which readings should I call about?
  3. What should I do about my diabetes medications on a day when I am sick or cannot eat normally?
  4. Could any of my new medications raise or lower my blood sugar?
  5. Are my A1C and kidney tests recent enough, or should they be repeated?
  6. How can I get enough protein for healing without upsetting my blood sugar?

Targets are individual, and some older adults are given a wider range on purpose to avoid dangerous lows. For the last question, see eating for wound healing.

Protecting your feet while you recover

If the wound is on your foot, keeping pressure off it matters as much as the dressing. Follow the instructions for any boot, shoe or device, and ask before changing how much you walk. See offloading for foot wounds and the page on diabetic foot ulcers.

Watch the other foot too. It carries extra load, and nerve damage can hide a new blister. A daily foot check catches problems early.

How Gateway helps the teams work together

Gateway arranges wound care and diabetes care at home with partner clinicians in Greater St. Louis and the Metro East. If you already have a physician or endocrinologist, we keep that office involved and, with your permission, send wound updates and questions. Treating clinicians make all decisions about medications and treatment. See also diabetic foot care coordination.

Call 314-325-0126, or send the request care form with a name and phone number only.

What to report and when to call 911

Call the treating clinician’s office about:

  • Readings that stay above or below the range you were given
  • Repeated low blood sugar episodes
  • Fever, chills, spreading redness, new drainage or a bad smell from the wound
  • A new dark or discolored area on a foot or toe

Call 911 if someone with low blood sugar cannot swallow safely, passes out or has a seizure. Call 911 for very high blood sugar with vomiting, deep fast breathing, fruity-smelling breath, severe drowsiness or confusion. Gateway is not an emergency service.

Common questions

Why did my blood sugar go up when my wound got worse?

Infection and inflammation trigger stress hormones that raise blood sugar. Sometimes the rise shows up before the wound looks different. Pain, poor sleep and less movement add to it. Tell both the wound care clinician and the clinician who manages your diabetes, since the response may involve both.

Should I eat less to bring my blood sugar down while I heal?

Do not cut back on food without asking. Healing needs protein and calories, and eating less while taking diabetes medication can cause low blood sugar. Ask your clinician or a dietitian how to balance meals for both goals. The answer is often about what and when you eat.

What is an A1C, and why does it come up at wound visits?

An A1C is a blood test that reflects your average blood sugar over roughly the past three months. It shows the longer trend behind your daily readings, which helps clinicians judge how much blood sugar may be affecting healing. Your clinician decides what result is a reasonable goal for you.

I take insulin and my appetite is poor. What should I ask?

Ask the prescriber for a sick-day plan: what to do with each insulin when you eat less than usual, how often to check, and which numbers mean you should call. Until you have it, call the prescriber’s office when your eating changes.

Related pages

General information to help you talk with your own clinician. It is not medical advice, and the treating clinician makes every clinical decision. For a medical emergency, call 911.

Updated October 2026