Morton’s Neuroma: Symptoms, Causes, and Relief for Ball of Foot Pain

An Overview of the Condition

Morton’s neuroma is a benign but painful thickening of the tissue around one of the digital nerves leading to your toes. In the UK, it is a common cause of metatarsalgia (pain in the ball of the foot). It most frequently occurs between the third and fourth toes, though it can also affect the second and third.

Contrary to what the name suggests, a neuroma is not a tumour. Instead, it is a form of perineural fibrosis—essentially scar tissue or thickening caused by irritation, pressure, or injury to the nerve. Patients often describe the sensation as standing on a folded sock or having a small stone stuck in their shoe, even when they are barefoot.

Recognising the Signs

Unlike many other foot conditions, Morton’s neuroma rarely presents with external signs like swelling or redness. The symptoms are almost entirely sensory. According to NHS clinical standards, you should look for the following symptoms:

• Burning Pain: A sharp, stabbing, or burning sensation in the ball of the foot that may radiate into the toes.
• Numbness: A loss of sensation or a 'pins and needles' feeling in the affected toes.
• The 'Pebble' Sensation: A persistent feeling that something is inside your shoe or bunched up under your foot.
• Aggravation by Movement: Symptoms typically worsen when walking or wearing tight-fitting shoes and may improve immediately upon removing footwear and massaging the area.

Why Does it Happen?

The exact cause of Morton’s neuroma is often a combination of biomechanical factors and lifestyle choices. Anything that causes compression or irritation of the nerve can trigger the thickening process. Key risk factors for UK patients include:

• High-Heeled Shoes: Footwear with a heel higher than two inches places significant pressure on the metatarsal heads.
• Tight or Pointed Shoes: Narrow toe boxes squeeze the metatarsal bones together, pinching the nerve between them.
• High-Impact Sports: Activities like running, tennis, or aerobic classes can subject the feet to repetitive trauma.
• Foot Deformities: People with bunions, hammertoes, high arches, or flat feet are at a higher risk due to altered weight distribution.

Managing Pain at Home

In accordance with NICE (National Institute for Health and Care Excellence) clinical knowledge summaries, initial management focuses on reducing pressure on the nerve. You can try the following:

• Footwear Modification: Switch to wide-fitting shoes with a low heel and plenty of room for your toes to move.
• Metatarsal Pads: These are small pads placed inside your shoe to lift and separate the metatarsal heads, taking pressure off the nerve.
• Orthotics: Over-the-counter or custom-made insoles can help redistribute weight more evenly across the foot.
• Rest and Ice: Applying an ice pack to the affected area for 10–15 minutes several times a day can reduce inflammation.
• Paracetamol or Ibuprofen: Standard over-the-counter analgesics can help manage acute flares of pain.

Seeking Professional Advice

If self-care measures do not provide relief within a few weeks, it is important to seek medical advice. You can speak to an online GP to discuss your symptoms and determine the best course of action. An online consultation is often the fastest way to get a professional opinion on whether your foot pain is suggestive of Morton's neuroma or another condition like a stress fracture or bursitis.

During a video or phone consultation, the doctor will ask about the location of your pain, what triggers it, and the type of footwear you usually wear. They can provide advice on more potent anti-inflammatory medications or issue a referral to a podiatrist or a musculoskeletal (MSK) specialist for a physical examination, such as the 'Mulder’s Click' test, or diagnostic imaging like an ultrasound.

Beyond Conservative Care

If the pain remains persistent and affects your mobility, broader medical interventions may be considered. These include:

• Steroid Injections: A corticosteroid mixed with a local anaesthetic can be injected into the affected area to reduce inflammation and provide temporary pain relief.
• Physiotherapy: Specific exercises can improve foot mechanics and strengthen the muscles that support the arches.
• Surgical Intervention: Neurectomy (removal of the affected nerve) is typically considered a last resort. While highly successful in relieving pain, it results in permanent numbness in the area where the nerve was removed.