Pain under the foot: here's everything you need to know

Have you ever woken up in the morning and felt a stabbing pain in your foot? That pain under your foot that makes you wonder, "What happened to me?"

You're not alone. In my office, I see countless patients who come in with this problem, and the first thing they ask me is always the same: "Doctor, why does my foot hurt so much?"

Pain under the feet is one of the most common ailments we orthopedists treat. And no, it's not always the usual plantar fasciitis that everyone is familiar with—although that remains one of the main causes.

What's under our feet?

Before we understand why it hurts, let's take a look at what's underneath. The foot is an incredibly complex structure—it has 26 bones, more than 30 joints, and over 100 muscles, tendons, and ligaments. A true feat of engineering!

The bottom of the foot, the part that touches the ground, is primarily made up of the plantar fascia—a tough band of tissue that runs from the heel to the toes. Then there are the intrinsic muscles of the foot, the flexor tendons that come from the leg, important nerves like the plantar nerve, and, of course, the blood vessels that nourish everything.

It's an area that has to bear the entire weight of the body. Every day. For thousands of steps. That's why it sometimes rebels!

The most common causes of pain under the foot

Pain under the foot can arise from many different problems. Plantar fasciitis is certainly the most common—inflammation of that band of tissue I mentioned earlier. It usually hurts especially in the morning or after sitting for a long time.

But it's not the only culprit. Morton's neuroma, for example, causes a burning pain between the toes, often described as "feeling like a pebble in your shoe." Metatarsalgia, on the other hand, causes pain under the heads of the metatarsals—those bony prominences you feel under the ball of your foot.

Then there are the more "mechanical" causes: flat feet or high arches can alter load distribution and create painful overload zones. And let's not forget stress fractures, those microfractures that form when the foot is subjected to repeated stress—I often see them in athletes.

Age plays a role. Over time, the fat pad under the foot thins, which can cause anterior plantar pain, especially in women who have worn high heels for years.

How pain manifests itself

My patients describe the pain in their feet in a thousand different ways. "It's like walking on nails," "It feels like a tennis ball under my foot," "It's a constant burning pain." Each condition has its own "character."

Plantar fasciitis pain is typically worse in the morning and improves with movement. Morton's neuroma, on the other hand, worsens with walking and improves with the removal of shoes. Metatarsal pain is worse when standing on tiptoe.

Some patients also report swelling under the foot, tingling in the toes, or that “sleepy foot” sensation which can indicate a nerve problem.

How do I diagnose?

When a patient comes into my office with pain in the sole of their foot, the first thing I do is listen. Where exactly does it hurt? When does it hurt the most? For how long? What makes the pain better and what makes it worse?

Then comes the physical examination. I watch how he walks, observe the shape of his foot, and feel the painful areas. Often, by this point, I already have a pretty clear idea of ​​the problem.

If I have any doubts, or suspect a fracture, I'll order an X-ray. For soft tissue problems—tendons, plantar fascia, neuromas—ultrasound is very helpful. I reserve an MRI for more complex cases or when I need to schedule surgery.

Treatments that really work

The good news is that most underfoot problems resolve without surgery. Relative rest is often the first step—it doesn't mean staying completely still, but avoiding activities that trigger the pain.

Custom-made insoles often work wonders, especially for biomechanical problems like flat feet or metatarsalgia. Not the ones from the supermarket, mind you—the ones made specifically for your foot after a gait analysis.

Physical therapy is essential. Plantar fascia stretching, strengthening exercises, and physical therapies such as shockwave therapy—I've seen patients with chronic fasciitis recover completely with a good rehabilitation program.

When the pain is very intense, a cortisone injection may be useful, always guided by ultrasound to be precise.

Surgery? I reserve it for cases that don't respond to conservative treatment after at least six months of appropriate therapy.

Recovery: What to Expect

Recovery times vary greatly depending on the problem. Acute plantar fasciitis can resolve in a few weeks with proper treatment, while chronic forms can take months.

Morton's neuroma often responds well to conservative treatments, but sometimes surgery is necessary. Metatarsalgia usually improves gradually with orthotics and physical therapy.

One thing I always tell my patients: consistency is everything. Insoles should be worn at all times, exercises should be done every day, and the right shoes should be chosen carefully.

How to prevent problems

Prevention starts with shoes. Comfortable shoes with good arch support and moderate heels (maximum 4-5 cm). Avoid completely flat ballet flats and shoes that are too tight.

If you play sports, gradually increase the intensity. Your feet need time to adapt to new loads. And change your running shoes every 600-800 kilometers—I know, it's expensive, but your feet will thank you.

Body weight matters. Every extra pound translates into more stress on your feet. And don't forget to stretch—both before and after exercise.

SmartHallux: Where we can help you

Dr. Luigi Manzi, who has gained specific experience in this field, follows each patient with a personalized treatment plan using the most modern techniques, including minimally invasive ones when necessary.

The SmartHallux team treats conditions such as hallux valgus , Morton's neuroma , and other deformities that cause foot pain. Providing comprehensive support throughout the treatment process, SmartHallux can be a winning choice for effective treatment tailored to your needs. Book your specialist consultation with the SmartHallux team now (opens in a new tab).

We would like to point out that our approach is always conservative first and foremost – surgery only when truly necessary.

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