Morton's Neuroma: That 'Pebble in the Shoe' Feeling

What it is

A foot neuroma is benign thickening of tissue around a small nerve in the foot. The nerve becomes irritated and enlarged from repeated compression, producing burning, tingling, electric-type pain. Despite the name, it isn’t a true tumor — the “neuroma” refers to nerve tissue that has thickened and become hyper-sensitive in response to chronic irritation.

The most familiar form is Morton’s neuroma, which classically develops in the third web space (between the third and fourth toes). But the same kind of compressive nerve irritation can develop:

• In the second web space (between the second and third toes) — sometimes called a Hauser neuroma
• In the first or fourth web space less commonly
• In the digital nerve before it has thickened into a true neuroma — this earlier stage is often called interdigital neuritis and presents the same way clinically; the distinction matters mostly for imaging and prognosis, not for early treatment
• Occasionally in multiple web spaces in the same foot

Because the symptoms and conservative treatment are very similar across these locations, this page covers them together. The classic third-web-space Morton’s neuroma is the most common pattern, but a clinician may diagnose neuroma or neuritis at a different location after examining your foot.

Symptoms

People often describe the sensation in vivid terms:

• Burning or electric pain in the ball of the foot, radiating into one or both adjacent toes
• A feeling of standing on a pebble or having a sock bunched under the foot
• Numbness or tingling in the affected toes
• Pain that worsens with walking, especially in tight shoes
• Relief when removing shoes and massaging the foot

Symptoms can come and go for months before becoming constant. The exact toes affected give a clue to which nerve is involved — pain into the third and fourth toes points to the third-web-space (“classic” Morton’s), pain into the second and third toes to the second web space, and so on.

What causes it

The nerve gets pinched between the metatarsal bones. Anything that increases that compression can contribute:

• Tight or pointed shoes that squeeze the forefoot
• High heels that shift body weight forward onto the ball of the foot
• Repetitive impact — running, racquet sports, dance
• Foot deformities like bunions, hammertoes, or flat feet
• Trauma to the forefoot

Women are roughly 8–10 times more likely to develop Morton’s neuroma than men, largely attributed to footwear patterns.

Treatment options

Treatment is staged — start conservative, escalate if needed. The nerve doesn’t shrink, but symptoms can be managed effectively in most cases.

Conservative

• Wider, lower shoes with a roomy toe box and low heel — the single most important change
• Metatarsal pads placed just behind the ball of the foot to spread the bones and offload the nerve
• Custom orthotics to support the arch and reduce forefoot pressure
• Activity modification — temporary reduction in high-impact activity
• Ice and NSAIDs for flare-ups
• Toe spacers and stretches for foot mobility

When conservative care isn’t enough

• Corticosteroid injections — can reduce inflammation around the nerve and provide weeks to months of relief
• Alcohol sclerosing injections — chemically dehydrate the nerve in a series of treatments
• Cryoneurolysis — freezes the nerve to interrupt pain signals
• Radiofrequency ablation — uses heat to disrupt the nerve

Surgical

If injections and footwear changes fail after 6–12 months, surgery may be considered. Options include nerve decompression (releasing the ligament pressing on the nerve) or neurectomy (removing the affected portion of the nerve). The latter can leave permanent numbness in the affected toes but reliably relieves pain.

When to see a clinician

See a clinician if you have:

• Persistent burning, tingling, or numbness in the toes
• Pain that limits walking, exercise, or shoe choice
• Symptoms lasting more than a few weeks despite shoe changes
• Worsening despite conservative care

Diagnosis is usually clinical — a clinician can often reproduce the pain with specific exam maneuvers. Imaging (ultrasound or MRI) is sometimes used to confirm or rule out other causes.

Living with it

Footwear changes do most of the work. People who switch to wide, low shoes — even when they don’t love how they look — often report dramatic improvement. Reserve narrower or heeled shoes for short occasions, not all-day wear.