What Is Diabetic Neuropathy?
Diabetic peripheral neuropathy is nerve damage in your feet and legs caused by prolonged high blood sugar levels. It typically begins with tingling or burning sensations in your toes, then progresses to numbness. About 50% of diabetics will develop some degree of neuropathy,² making it the leading cause of diabetic foot complications and one of the most preventable causes of amputation.
Here's what's actually happening in your body. High glucose levels damage the tiny blood vessels that supply oxygen and nutrients to your nerves. Think of your nerves like electrical wires—they need a constant blood supply to function properly. When that supply is compromised, the nerves start to malfunction. First, they send incorrect signals. That's when you feel the tingling, burning, or shooting pain. Eventually, they stop sending signals at all. That's when the numbness sets in.
And here's the paradox that makes this condition so dangerous: the numbness itself is the warning sign. When you can't feel pain, small injuries become serious infections. Your body's alarm system has been turned off, and you won't know there's a problem until you see it. This is why comprehensive diabetic foot care focuses so heavily on daily visual inspection—you can't rely on pain to alert you anymore.
Why Do Diabetics Lose Sensation in Their Feet?
The loss of sensation doesn't happen overnight. It's a progressive process that starts at the cellular level and gradually works its way through your nervous system.
Here's what most people don't realize. Your nerves have specific nutritional needs. They require a steady supply of oxygen, glucose (ironically), and specific nutrients delivered through your bloodstream. When blood sugar levels stay elevated for months or years, two things happen. First, excess glucose attaches to the walls of the tiny blood vessels (capillaries) that feed your nerves, making them thick and stiff. Second, high glucose triggers inflammation throughout your body, including in the nerve tissue itself.³
The result is what we call the "faulty thermostat effect." Your nerves start sending mixed signals to your brain. You might feel like your feet are freezing even when they're normal temperature to the touch. You might experience burning sensations when nothing is actually burning. Or you might feel pins and needles without any external cause. These are your nerves crying out for help before they stop working altogether.
In my Houston practice, I often see people who've ignored these early symptoms for months or even years. They assume it's just "getting older" or that their shoes are too tight. But peripheral neuropathy symptoms are your body's way of telling you that something needs to change—and the sooner you address it, the more options we have to slow or even partially reverse the damage.
What Makes Diabetic Foot Problems So Serious?
Diabetic foot problems aren't just about discomfort—they're about a perfect storm of conditions that can escalate frighteningly fast. Let me explain why diabetes creates such unique challenges for foot health.
Every 30 seconds, someone loses a limb due to diabetes complications.⁴ That statistic isn't meant to scare you, but it should motivate you to take your foot health seriously. The reason diabetic foot problems become so severe is that diabetes attacks your feet from three different angles simultaneously.
First, there's the neuropathy we just discussed—you can't feel injuries when they happen. Second, diabetes damages your circulation. High blood sugar causes peripheral artery disease, where the blood vessels in your legs and feet narrow and harden. Without good blood flow, even minor cuts struggle to heal.
And third—this is the part that really amplifies the danger—diabetes weakens your immune system's ability to fight infection.
Here's the shocking part. Every point your A1C rises above normal doesn't just decrease your healing ability by a small amount—it reduces it by 10 times. Not 10%. Ten times.⁵ If your A1C is just one point too high, your healing ability is reduced by 1000%. What might heal in days for someone else could take weeks or months for you. When you combine that with the inability to feel pain and poor circulation, you can see why what starts as a tiny blister can progress to a serious infection requiring hospitalization.
But here's the good news: understanding these mechanisms means you can interrupt this cascade at multiple points. That's exactly what we'll talk about next.
Houston Podiatrist Treats Diabetic Foot Complications
When you come into my office, the first thing I do is listen to learn what your goals are. I don't just want to know what hurts—I want to know what you want to DO. Maybe it's walking your dog without worry. Maybe it's traveling to see grandchildren. Maybe it's just sleeping through the night without foot pain keeping you awake. Whatever your goal, that's what drives our treatment plan.
In most medical offices, doctors are trained to think in terms of medicate or operate. If medication doesn't work, the next step is surgery. But what if there's a third option that most doctors never mentioned? For diabetic foot complications, that's exactly what we offer—a complete progression from lifestyle modifications through advanced regenerative treatments, with surgery reserved only for cases where nothing else works.
Blood Sugar Control & Proper Footwear
This is the foundation everything else builds on. Every point your A1C rises above normal reduces your healing ability by 10 times—that's 1000%, not just 10%. We can provide the most advanced treatments in the world, but if your blood sugar isn't controlled, nothing else will work as well as it should. Work closely with your endocrinologist or primary care doctor to get your A1C below 7%, ideally below 6.5%.⁶
Sometimes, that's as simple as changing your shoes. You need footwear with a wide toe box that doesn't compress your toes, low heels that don't shift weight forward onto pressure points, and soft materials that won't rub against vulnerable areas. Check inside your shoes every single time before putting them on—shake them out to make sure nothing's fallen inside. Small objects can cause injuries you won't feel.
For many people, switching to appropriate footwear and maintaining better blood sugar control prevents new problems from developing. But it doesn't address issues that are already present.
Professional Wound Care
When wounds develop despite prevention, proper professional care makes all the difference. We start with thorough debridement—removal of dead tissue that's preventing healthy tissue from recovering. Think of it like clearing debris from a construction site so work can resume.
I'll apply specialized dressings that maintain the moist environment wounds need to heal. This isn't the same as keeping a wound wet—it's about creating optimal conditions at the cellular level. We'll also fit you with offloading devices like walking boots or specialized sandals to remove pressure from the wound. Pressure is the enemy of healing in diabetic ulcers.
Success rate: 70-80% of diabetic ulcers heal with proper wound care, pressure offloading, and blood sugar control.⁷ Timeline: Most ulcers show 50% reduction in size within 4 weeks, complete healing in 8-12 weeks depending on size, location, and A1C control. We'll see you weekly initially, spacing out appointments as healing progresses.
Custom Orthotics for Pressure Redistribution
Think of custom orthotics like eyeglasses for your feet. While you're wearing them, they compensate for your mechanics and redistribute pressure away from vulnerable areas. They don't cure the underlying neuropathy, but they prevent ulcers from forming in the first place.
Here's how we create them. I'll do a comprehensive biomechanical examination and gait evaluation—I watch you walk to see where pressure points develop. Then we'll take a 3D scan of your feet and custom fabricate orthotics to precisely redistribute pressure from high-risk areas. These aren't the generic insoles from the drugstore. These are medical devices molded specifically to your feet.
Results: Custom orthotics reduce ulcer recurrence by 30-40% when combined with proper footwear.⁸ Cost: $700 for custom orthotics. That's a one-time investment that typically lasts 3-5 years with proper care.
Advanced Regenerative Treatment (The Third Option)
Here's where we move beyond standard wound care to actively restart your body's stalled healing response. After about four weeks of standard care, if a diabetic ulcer hasn't reduced in size by at least 50%, chances of healing with conventional treatments alone drop significantly. That's when we discuss regenerative options.
Skin Substitutes—Bioengineered Scaffolding: These are products designed to mimic or support your skin's natural healing process. Think of them as temporary scaffolding that gives your body the structure and biological signals it needs to rebuild healthy tissue. Unlike standard dressings that simply cover a wound, skin substitutes actively participate in the healing process by delivering growth factors and creating an optimal environment for your cells to regenerate.
Success rate: 85-95% (compared to 70-80% with standard wound care alone).⁹ Insurance: Medicare covers approved skin substitutes when specific criteria are met. We'll work with your insurance to determine coverage.
PRP (Platelet-Rich Plasma) Therapy—Liquid Gold for Healing: We draw a small amount of your blood and place it in a centrifuge which spins it to concentrate the platelets. These platelets contain growth factors—specialized proteins that signal your body to send healing cells to injured areas. By concentrating these platelets and injecting them precisely where needed, we deliver a powerful healing boost directly to damaged tissue.
PRP therapy treats chronic non-healing ulcers, soft tissue damage with stalled healing, and tendon injuries complicated by diabetes. Timeline: The procedure takes 30-45 minutes including blood draw. You'll see initial improvement in 2-4 weeks, with continued improvement over 3-6 months. Cost: $850 per injection.
Shockwave Therapy—Restarting the Healing Process: Despite its intimidating name, it's a non-invasive treatment using acoustic pressure waves to stimulate healing. Think of it like aerating a lawn—by creating small channels, you allow oxygen, nutrients, and healing factors to penetrate more deeply.
Shockwave therapy stimulates increased blood flow, breaks up scar tissue, triggers release of growth factors, and creates controlled microtrauma that restarts stalled healing. Protocol: 10-15 minutes, once a week for 3 weeks. Success rate: 82% find significant improvement after full treatment.¹⁰ Package pricing: $750 for 3 sessions (saves $150 vs. individual sessions at $300 each).
Combined PRP + Shockwave Protocol: It's like planting seeds in a garden. PRP provides the seeds—the growth factors your body needs to repair. Shockwave therapy prepares the soil and creates optimal growth conditions. Together, they create a healing environment that can succeed where other treatments have failed.
Combined success rate: 85-95%. Total investment: $1,600 (PRP $850 + Shockwave package $750).
I know these are cash-pay treatments, and that's a real consideration. But compare that to the cost of ongoing wound care, potential hospitalization for infection, or the life-changing impact of amputation. Many people find it's actually more cost-effective in the long run. Some FSAs and HSAs cover these treatments—we'll help you explore your options.
Surgery—When Necessary
Look, I know foot surgery sounds scary. But here's what I need you to understand: for diabetics, surgery is rarely about convenience—it's about preventing limb loss and saving your mobility. When we recommend surgery, it's because we've exhausted conservative options, or because early surgical intervention will prevent more extensive surgery later.
Surgery becomes necessary when there's deep infection not responding to IV antibiotics, bone infection (osteomyelitis) requiring infected bone removal, Charcot foot requiring reconstruction to prevent permanent deformity, or severe deformity creating persistent ulceration risk. These aren't elective procedures—they're interventions to save your foot when other options have failed.
The reality: With proper care progression through all the levels we've discussed, fewer than 5% of diabetic patients in our practice require major surgical intervention. And when surgery is necessary, modern techniques combined with comprehensive post-operative wound care mean success rates are higher than ever.
Post-surgical success rate: 85-90% when combined with proper pressure offloading and continued diabetic foot care.¹¹
If you're experiencing any of the warning signs we've discussed, don't wait for things to get worse. Contact us to schedule an immediate appointment. The sooner we address what's happening, the more options we have available—and the better your outcome will be. Call us at 713-785-7881 or click below to request your appointment.
What to Expect When You Come In
When you come in, I'll start by asking about your diabetes management—how long you've had diabetes, what your recent A1C levels have been, and what medications you're taking. Then I'm going to ask about your goals. What activities are you avoiding because of foot concerns? What would you like to be able to do without worry?
The physical examination is thorough but not uncomfortable. I'll examine your feet for signs of neuropathy, circulation problems, and any structural issues. We'll test sensation using a monofilament—it looks like a small bristle—and if you can't feel this light touch in certain areas, it tells us where neuropathy is affecting you. I'll check pulses in your feet and may order a Doppler ultrasound to evaluate blood flow. Good circulation is essential for healing, so if we find issues, I may refer you to a vascular specialist for additional evaluation.
If wounds are present, I'll thoroughly examine them, measure them, photograph them for comparison at future visits, and may take X-rays to rule out bone involvement. We'll start treatment the same day—there's no reason to delay when it comes to diabetic foot wounds.
I'll explain exactly what I'm seeing, what it means, and walk you through the treatment options available. We'll start with the least invasive approach that will actually work—not the most aggressive, and not a wait-and-see approach if action is needed now.
For active wounds, we'll typically see you weekly initially. As healing progresses, we'll space appointments out. For prevention and monitoring, I recommend quarterly visits—more frequently if your A1C is elevated or if you have risk factors like neuropathy or poor circulation. The goal is to catch problems before they become serious, and that means regular professional foot care as part of your overall diabetes management.
Protecting Your Feet: Daily Care and Prevention
Houston's heat and humidity create additional challenges for diabetic foot care. Moisture buildup in shoes increases fungal infection risk, while hot pavement temperatures can cause burns you might not feel. During summer months, check your feet twice daily—once in the morning and again after any outdoor activity.
The most important prevention tool doesn't cost anything and takes less than five minutes a day: daily foot inspection. Set a reminder on your phone for the same time every evening—I recommend right before bed. Make this as automatic as brushing your teeth.
Every Night Before Bed: Sit in good light and use your hands to feel both feet for warmth, moisture, or texture changes. Compare both feet—one warmer than the other is a red flag. Look between every toe for cracks, redness, or moisture buildup. Check bottoms using a mirror, or ask a family member to look. Note anything different from yesterday—take a photo if you're uncertain.
Wash feet with warm (not hot) water and mild soap. Dry thoroughly, especially between toes. Apply moisturizer everywhere except between toes.
If you can't see or reach your feet easily, this is when you ask your spouse, adult child, or caregiver to help. There's no shame in this—catching problems early is what matters. If you're also dealing with hammertoes or other foot deformities, these areas need extra attention as they create additional pressure points.
