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

Morton’s neuroma is a common musculoskeletal condition affecting the ball of the foot, most frequently the area between the third and fourth toes. Despite its name, it is not a tumour; rather, it is a thickening (fibrosis) of the tissue surrounding one of the digital nerves. This thickening occurs as a response to irritation, trauma, or excessive pressure on the nerve.

In the UK, this condition is a frequent cause of metatarsalgia (pain in the forefoot). It is significantly more common in women than men, often attributed to the types of footwear worn. According to NHS guidance, Morton's neuroma is manageable, and while it can be debilitating, many patients find relief through simple lifestyle adjustments and conservative treatments without the need for hospital surgery.

Patients with Morton's neuroma often describe a very specific set of sensations. Unlike many other foot injuries, there is rarely any outward sign of the condition, such as a lump or bruising. Instead, the symptoms are purely sensory and internal.

• Sensation of a pebble: Many people feel as though there is a small stone or a fold in their sock stuck under the ball of the foot.
• Burning pain: A sharp, stabbing, or burning pain in the ball of the foot that may radiate into the toes.
• Numbness or tingling: A 'pins and needles' sensation typically felt in the toes.
• Aggravation by activity: Symptoms usually worsen when walking in tight shoes or engaging in high-impact sports like running.

Symptoms often come and go. You may find that removing your shoe and rubbing your foot provides immediate, temporary relief. Over time, however, if left untreated, the symptoms may become more persistent and severe.

The exact cause of Morton's neuroma is related to anything that causes compression or irritation of the nerve. NICE (National Institute for Health and Care Excellence) identifies several contributing factors that increase the risk of developing this nerve thickening:

Footwear Choices

Tight, narrow, or high-heeled shoes are the leading causes. High heels shift the body's weight forward onto the ball of the foot, while narrow toe boxes compress the metatarsal bones, squeezing the nerve between them.

Foot Deformities

People with existing foot issues such as bunions (hallux valgus), hammer toes, high arches, or flat feet are at a higher risk. These conditions change how weight is distributed across the foot, placing undue stress on the digital nerves.

High-Impact Sports

Activities that involve repetitive loading of the forefoot, such as running, jumping, or racquet sports, can trigger the inflammatory response that leads to a neuroma. Tight athletic footwear, such as climbing shoes or ski boots, can also be a factor.

Diagnosis is usually made through a physical examination by a GP or podiatrist. In the UK, healthcare providers often use the Mulder’s Click test. This involves squeezing the sides of the foot with one hand while applying pressure to the affected interspace with the other. A palpable 'click' accompanied by the reproduction of the patient's symptoms is a strong indicator of Morton’s neuroma.

While the diagnosis is often clinical, GPs may occasionally suggest imaging. An ultrasound scan is the preferred diagnostic tool in the UK for confirming the size and location of the neuroma. X-rays are generally not helpful for seeing the neuroma itself but can be used to rule out stress fractures or arthritis in the metatarsal joints.

Management of Morton's neuroma typically follows a 'stepped' approach, starting with the least invasive methods.

• Footwear Modification: Switching to shoes with a wide toe box and lower heels is the most effective first step. This reduces the compression on the nerve.
• Orthotics: Using metatarsal pads or custom-made insoles can help lift and separate the metatarsal bones, taking pressure off the nerve.
• Pain Relief: Over-the-counter anti-inflammatories like ibuprofen can help manage acute flare-ups of pain and swelling.
• Corticosteroid Injections: If conservative measures fail, a GP may refer you for a steroid injection. This helps reduce inflammation around the nerve and can provide relief for several months.
• Surgery: As a last resort, a surgical procedure called a neurectomy may be performed to remove the thickened nerve tissue. This is usually done as a day case under local or general anaesthetic.

If you are experiencing persistent foot pain that is affecting your daily activities, speaking to an online doctor in the UK is a convenient first step. An online GP consultation can help you understand the likely cause of your pain without the need for an initial in-person visit.

During a video consultation, a doctor can:

• Assess your symptoms and medical history.
• Provide advice on suitable footwear and over-the-counter pain management.
• Issue private sick notes if your foot pain prevents you from performing your job (especially if you work in a role requiring long periods of standing).
• Guide you on how to access local NHS podiatry services or private specialists.
• Advise on whether your symptoms require more urgent imaging or specialised injections.