Short answer: A persistent feeling of a pebble in your shoe, or a sock bunched under the ball of your foot when nothing is there, is a classic sign of Morton’s neuroma: thickened tissue around a nerve between the metatarsal bones, most often between the third and fourth toes. Burning pain, tingling, or numbness in those toes often comes with it. Caught early, most neuromas respond to footwear changes, pads, and orthotics, and injections help many of the rest.
Patients describe this one vividly. They stop, take the shoe off, shake it out, find nothing, and put it back on, sometimes several times a day. If that routine sounds familiar, here is what is likely going on.
Why it feels like something is there
Between the metatarsal bones, the nerves that supply your toes pass through a narrow space. When one of those nerves is repeatedly compressed or irritated, the tissue around it thickens. That thickened area takes up space and fires abnormal signals, which the brain reads as an object underfoot: a pebble, a marble, a wrinkled sock. The most common site is between the third and fourth toes, with the space between the second and third next.
Along with the pebble sensation, a neuroma often produces burning or sharp pain into the toes, tingling or numbness, and pain that builds with walking and eases when you remove the shoe and rub the foot. Symptoms in tight or high-heeled shoes and relief barefoot is a telling pattern.
What causes the nerve to thicken
Anything that narrows the space or loads the ball of the foot repeatedly can contribute:
- Narrow, pointed, or high-heeled shoes that squeeze the metatarsals together
- Repetitive impact, common in running and court sports
- Foot shapes that load the forefoot, including high arches and flat feet
- Neighboring problems, such as hammertoes or a bunion, that shift pressure across the forefoot
Women develop Morton’s neuroma more often than men, and footwear is widely believed to be a large part of the reason.
How it is treated
The earlier a neuroma is addressed, the simpler the fix tends to be:
- Footwear first. A wide toe box and a lower heel give the nerve room. Many early cases improve with this change alone.
- Metatarsal pads. A small pad placed behind the ball of the foot spreads the metatarsals and offloads the nerve. Placement matters, and I fit these in clinic.
- Custom orthotics to correct the loading pattern that irritates the nerve, especially for runners and for feet with high or flat arches.
- Activity adjustments while the nerve calms, swapping some impact work for cycling or swimming.
- Injections. A corticosteroid injection may settle a nerve that has not responded to mechanical changes.
For the minority of neuromas that persist through good conservative care, further options exist, and that conversation follows an exam rather than preceding it. An exam also rules out the conditions that mimic a neuroma, including capsulitis, a stress fracture, or arthritis in the forefoot, each of which is treated differently.
When to see a podiatrist
See a podiatrist when the pebble feeling or forefoot pain has lasted more than a couple of weeks, when toes are tingling or going numb, or when you are changing how you walk or what you wear to avoid the pain. Sudden severe forefoot pain after an injury or a spike in training deserves a prompt exam to rule out a fracture.
Done shaking out a shoe with nothing in it? At my clinic CarePlus Foot & Ankle Specialists in Bellevue, I can confirm whether a neuroma is behind the feeling and start with the simple fixes first. Schedule online or call (425) 455-0936.
Frequently Asked Questions
Q1. Why does it feel like a pebble in my shoe when nothing is there? Thickened tissue around a nerve between the metatarsal bones takes up space and misfires, and the brain interprets those signals as an object underfoot. This is the hallmark symptom of Morton’s neuroma.
Q2. Can Morton’s neuroma go away on its own? Symptoms may settle if the irritation is removed early, usually through roomier shoes and offloading. An established neuroma tends to persist or worsen when the compressing forces continue.
Q3. What shoes are best for Morton’s neuroma? Shoes with a wide toe box, a low heel, and cushioning under the ball of the foot. Narrow, pointed, and high-heeled shoes are the most consistent aggravators.
Q4. When does a neuroma need an injection or surgery? When footwear changes, pads, and orthotics have had a fair trial without enough relief. Injections help many persistent cases, and surgery is reserved for the minority that resist everything else.
This article is for general education and is not a substitute for individual medical advice. If you have a foot concern, see a qualified clinician for an evaluation.