Nail & Skin Disorders

What Are Neuromas?

When the weight of the body lands on a swollen nerve, it can be debilitating. Learn the symptoms and alert clients to this common problem that develops in the nerves of the foot.

an abnormal growth of tissue due to pressure or trauma, most commonly found on the foot

It starts with a slight pain under the foot. Caught early, the symptoms can often be treated with a change of activity and a new pair of shoes. Left untreated, a neuroma can lead to surgery where the damaged section of the nerves needs to be removed. It’s possible for a neuroma to appear wherever there are nerves, which means, anywhere in the body. However, certain parts of the body are more susceptible to neuromas and the most common place for them to appear is in the foot. Specifically, neuromas most often form in the nerve running between the third and fourth toe (and less frequently between the second and third toe). In these locations, the neuroma is referred to as a Morton’s neuroma.

A Morton’s neuroma is always the result of pressure or trauma to the nerves. What varies is the cause of the trauma. Sometimes the structure of a person’s foot aggravates the nerve and causes a neuroma, as in the case of flat feet, or the presence of bunions or hammertoes. Other times, the neuroma develops because of tight, narrow shoes or from continued pressure, such as frequently walking barefoot on tile or the consistent pounding from certain sports, such as running.

The nerve that is affected between the toes is a sensory nerve, so when it becomes swollen or inflamed from being pinched, a burning pain is felt at the site of the inflammation and the pain radiates out to the toes. Clients may self-treat a Morton’s neuroma simply by making the connection between their activities and the pain. A woman may realize she always feels pain when she wears a particular pair of shoes, so she stops wearing the shoes. When the pressure is removed, the nerve heals. But many of us don’t make the connection between cause and effect, and over time the nerve becomes damaged.

Dr. Leon Watkins, a board-certified podiatrist at Watkins Foot Center in Metairie, La., says one way doctors diagnose a Morton’s neuroma is to give the “lateral squeeze test, which is performed by squeezing the forefoot from side to side while applying direct pressure to the affected area between the toes.” A podiatrist will be able to feel a “palpable mass” or “click” during the test, says Watkins. They can confirm their findings through an ultrasound or an MRI, though most doctors will want to try all conservative treatment options before scheduling an MRI. Additionally, a doctor may order X-rays, which won’t show the neuroma, but will allow them to rule out other possible causes of pain, such as a stress fracture on the bone.

Once it’s been determined that a patient has a Morton’s neuroma, doctors begin with the least invasive treatment option. “Initial treatment includes changing one’s footwear,” says Watkins. “We recommend a wide toebox, plenty of cushion, and no high heels.” Secondary treatments include icing to reduce swelling, orthotics, which relieve pressure from the nerve, cortisone injections, physical therapy, or oral anti-inflammatory medication. Watkins says these conservative treatments are effective 80% of the time, but a neuroma that has developed over four to six months may require surgery if a patient does not respond to any of these treatments.

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