Infrared Light Therapy for Neuropathy: What Podiatrists Are Trying and Why

Why Are So Many Podiatrists Suddenly Talking About Red Lights?

A patient of mine, let’s call her Linda, limped into my office last week with a bag of gadgets. One was a red-glowing boot she bought online. “My podiatrist recommended infrared therapy for my burning feet. Does this actually work?” she asked. I get some version of this question at least twice a month. And the truth is, a lot of clinics are jumping on the infrared bandwagon. You’ve probably seen advertisements for “photobiomodulation” or “cold laser therapy” for nerve pain. The promise: shine a certain wavelength of light on your feet, and your tingling, numbness, or burning will fade away. If only it worked quite that way.

Here’s the reality. Most people with neuropathy, especially diabetic neuropathy, are desperate. The pain keeps them up at night, the numbness makes them trip and fall, and the medications (gabapentin, pregabalin, duloxetine) don’t always deliver relief. Primary care doctors often just shrug and say, “Try some B12 and good luck.” So along come podiatrists offering a new tool, a new hope. Easy to see why people sign up. But is this just another expensive placebo, or is there anything to the science?

How Infrared Therapy Is Supposed to Work, And What Really Happens

Infrared light therapy means exposing the skin (usually feet or lower legs) to red or near-infrared light, typically at wavelengths around 800-900 nanometers. Devices range from clinic-sized panels to home-use boots and wraps. The idea: the light penetrates a few millimeters into tissue and stimulates mitochondria, those little powerhouses inside your cells. Allegedly, this kicks up ATP (energy) production, improves blood flow, reduces inflammation. Sounds pretty slick. As a doctor, I have to admit it sounds nearly magical, always a red flag.

But let’s talk about what happens in studies. There is some evidence: infrared light does increase local nitric oxide and blood flow, at least in healthy volunteers. A handful of small studies on people with diabetic neuropathy report modest improvements, less pain, slightly more sensation. Here’s where things get squishy. Most of these trials are short, small, often funded by device manufacturers, and the effects don’t seem to last. Nobody has shown that nerves actually regrow. At best, people describe some relief, maybe walk with more confidence, for a few weeks or months. Not a cure. This does not reverse nerve damage or address the root problem. Patients deserve to hear that upfront.

The People Who May Feel Relief, and the Ones Who Won’t

Linda, my patient with the burning feet, has type 2 diabetes that’s been out of control for years. She’s already tried gabapentin, duloxetine, topical capsaicin, even acupuncture. Her podiatrist offered a series of in-office infrared treatments: three times a week for a month, at $60 a session. After two weeks, she felt “maybe 10% better.” The improvement faded almost immediately.

My patients who try infrared therapy usually end up in two groups. Some have mild-to-moderate symptoms, early diabetic neuropathy or idiopathic small fiber neuropathy, often not on heavy medication yet. They sometimes report temporary relief: less tingling, a bit more warmth, maybe better sleep for a little while. Others have severe, long-standing neuropathy, maybe with numb feet, poor balance, or even wounds. Infrared rarely makes a dent for them. If you can’t feel a pinprick, if your feet are ice-cold, red light isn’t going to bring those nerves back.

And, honestly? Sometimes the biggest relief comes simply from being listened to. That’s real, but it’s not the same as actual nerve healing.

Questions You Should Ask Before Paying for More Sessions or Buying a Device

So, should you try it? I’m not against infrared therapy as a last-ditch option if you’ve already been through every other reasonable treatment and still have mild-to-moderate neuropathic pain. But don’t break the bank on a home device. Don’t expect miracles. If a podiatrist or pain clinic is selling you a package of 20 treatments and promising to “reverse” your neuropathy, that’s an exit sign.

Before you sign up, ask: How many sessions before most people notice any real difference? How long do the effects last? Have you seen it help someone with symptoms like mine? More critically, was my blood sugar, B12, thyroid properly checked, or an EMG done before concluding this was “idiopathic” neuropathy? Too many patients wind up with infrared therapy for symptoms that could be fixed by addressing an underlying issue, missed prediabetes, untreated B12 deficiency. That’s not just careless; it crosses into malpractice.

If your neuropathy is new or rapidly getting worse, especially if you’re losing strength, see a neurologist, not a spa. Not just your friendly podiatrist. You need a real workup. Infrared therapy will do nothing if your actual problem is something like CIDP, vasculitis, or a pinch in your spine.

Look, I wish we had a real cure for neuropathy pain. We don’t. Infrared is pretty safe, though burns can happen if you use these devices wrong. If you’re considering it, go in with your eyes open, don’t spend more than you can afford, and make sure an actual doctor has figured out what’s going on first. There’s no magic in red light. But sometimes, if you’re out of options, a little comfort is still worth something. Just be clear about what you’re chasing. And don’t buy the hype.