Diabetic Foot Care: The Daily Check, the Shoe Rules, and When a Small Thing Is an Emergency
You've had type 2 diabetes for a while, or you were just told you have it, and somewhere in the paperwork someone said "check your feet." You nodded. Nothing hurts, so nothing seems wrong.
That's the pattern this guide is about. With diabetes, the nerves that report pain and the vessels that heal damage both work less well. A blister from new shoes can turn into an open sore that won't close (a diabetic foot ulcer) without ever hurting. Most diabetes-related amputations start with a sore like that, and the IWGDF's estimate is that up to 75 percent of foot ulcers are preventable.
This piece covers what's different with diabetes, the 60-second daily check, the washing and shoe rules, the same-day list, and what the annual exam is for.
If you don't have diabetes and you're here for foot pain, start with the 5-minute self-check. If you do, keep reading; the self-check assumes you can feel your feet.
What's different once diabetes is in the picture
You lose the pain signal. Years of high blood sugar damage the long nerves that run to the feet (peripheral neuropathy). Some men get burning or tingling; many get nothing, which is the dangerous version. The injury happens and no alarm goes off.
Damage heals slower and infects easier. The same years narrow and stiffen the arteries in the legs (peripheral artery disease). Less blood reaches the foot, so a cut that would close in days can sit open for weeks. Put the two together: an injury you can't feel, on a foot that can't repair itself, that you don't look at.
Men over 40 with type 2 are the group this hits because type 2 often runs for years before it's diagnosed, so the damage has a head start. Per the IWGDF, a man with neither nerve damage nor artery disease isn't at meaningfully higher ulcer risk than anyone else; once either shows up, he is. The annual exam tells you which group you're in.
The 60-second daily check
Once a day, same time.
Look at everything. Tops, soles, heels, and between every pair of toes, both feet. If you can't see the sole, put a hand mirror on the floor or take a photo with your phone. The phone is better: you can zoom and compare against yesterday.
What you're looking for. Cuts. Blisters. Redness. Swelling, especially in one foot only. A spot warmer than the same spot on the other foot. Any color change toward dark red, blue, or black. Nails that are thick, yellow, crumbling, or growing into the skin. A callus with a dark spot or dried blood under it, often the first sign of a wound underneath.
Two home tests. Warmth: with an infrared thermometer, the IWGDF's threshold is a difference of more than 4.0 degrees F (2.2 degrees C) between the same spot on each foot, two days in a row. That means walk less and call. Sensation: with your eyes closed, have someone lightly touch the tips of your big, middle, and little toes; any touch you miss goes on the list for your next visit. Neither test replaces the clinic exam.
The daily habits and the shoe rules
The daily routine already has the check in it. These are the rules around it.
1. Wash and dry
Warm water, not hot; test it with your elbow or a thermometer (the NIDDK's safe range is 90 to 95 degrees F). Soap, no soaking, and dry between every pair of toes; damp skin there is where fungal cracks start.
2. Moisturize the right places
Cream on heels, soles, and tops, never between the toes. The cracked-heels guide covers the nightly method and the Gehwol Fusskraft Soft Feet cream is the one we use. Cream goes on intact skin only; an open crack is on the same-day list.
3. Nails straight across, then file
Trim after washing, straight across, no rounding the corners, then file the edges smooth. If you can't reach, can't see well, or the nails are thick and yellow, the trim is a podiatrist's job. Thick, discolored nails are often fungal and often not; is it toenail fungus? has the self-check and the test, and keeping toenail fungus from coming back the shoe and sock rules, with your clinician's sign-off before any treatment.
4. No bathroom surgery
Never cut a corn or callus yourself, and never use a blade or a corn-removal pad or liquid. A podiatrist reduces calluses and can see what's under them.
5. Never barefoot, not even indoors
Socks alone don't count; thin slippers don't count. The garage, the pool deck, the mailbox: shoes every time.
6. Hand inside every shoe before it goes on
Feel the whole insole and both sides for a pebble, a rough seam, a lifted edge.
7. Socks that don't rub
No seams, or seams turned out. Soft, not tight, no knee-high compression unless your foot care team prescribed it. Change them daily.
8. Fit measured late in the day
Feet swell through the day. Get measured in the afternoon, in the socks you'll wear, with room in front of the longest toe. Break new shoes in over days, an hour or two at a time, with a foot check after each wearing. If you work on your feet, the standing-all-day guide fit rules still apply.
9. Prescribed footwear, worn
If your clinician prescribes extra-depth shoes, custom shoes, custom insoles, or toe orthoses, wear them indoors and out; after a healed sore, per the IWGDF, they become the everyday footwear. Medicare and many insurers cover them; ask.
The same-day list
Same day means today, not your next appointment. Call your foot clinician or primary care office the day you find any of these.
- Any break in the skin that hasn't started to close within a day. A cut, a scrape, a bleeding heel crack.
- A blister. Don't pop it. Cover it with a clean, dry dressing and stay off it until it's seen.
- Redness, warmth, or swelling, especially in one foot with no obvious injury. This can be infection, or the start of a Charcot foot (Charcot neuro-osteoarthropathy), where bones in a numb foot fracture and shift; one that keeps bearing weight can be permanently deformed.
- Any wound with drainage, pus, or a smell.
- Black or blue skin on the foot or toes.
- A fever with any foot problem.
- New pain in a foot that usually can't feel pain.
After hours, a fever, black skin, drainage, or a red, hot, swollen foot means urgent care or the emergency department tonight. A blister or skin break without those signs: cover it, stay off it, and call at opening time.
The annual exam and what to bring
Every adult with diabetes should have a comprehensive foot exam at least once a year; the ADA Standards of Care and the IWGDF agree. The exam tests sensation (the 10-gram monofilament test), checks the foot pulses, and looks for deformities, calluses, and skin changes.
After that, frequency follows risk. Per the IWGDF: no nerve or artery findings, yearly. Nerve damage or artery disease, every 6 to 12 months. Both, or one plus a deformity, every 3 to 6 months. A previous ulcer or amputation, every 1 to 3 months. The ADA adds that anyone with sensory loss, a prior ulcer, or an amputation should have their feet looked at at every visit.
What to have ready. The shoes you wear most. Your phone photos, with dates. Your latest A1C, your medication list, whether you smoke, and any past sore, infection, or foot surgery. Bring the doctor-prep checklist so the visit covers the feet.
What doesn't work or is dangerous
- Soaking your feet. Long soaks soften and dry out fragile skin.
- Heating pads, hot water bottles, and space heaters. A numb foot can't tell you it's burning. Cold feet get socks, including in bed.
- Corn and callus removers. The pads and liquids use salicylic acid to dissolve skin; a foot that can't feel lets them take too much.
- Tight socks and shoes you're "breaking in" through the pain. Pressure you can't feel is still pressure.
- Going barefoot "just to the mailbox." That's the one that ends up in the exam room.
- Waiting to see if it heals. With diabetes, the week you'd give a healthy foot is how a scrape becomes a hospital stay.
Bottom line
Diabetes takes away the two things a foot relies on: feeling damage and repairing it. The daily check covers the first; the shoe rules cover the second.
Learn the same-day list now, while nothing is wrong. Get the annual exam and find out your risk group. If you haven't looked at your feet in years, you have plenty of company. Do the first check tonight.
