|  |  |  |  | What Causes Morton's Neuroma? This problem begins when the outer coating of a nerve in your foot thickens. This thickening is caused by irritation that results when two bones repeatedly rub together (often due to ill-fitting shoes or abnormal bone movement). The area between the third and fourth toes is most commonly affected, followed by the area between the second and third toes. Nerve problems resulting from complications of diabetes or alcoholism may also cause neuroma-like symptoms. |  |  | Symptoms Neuroma pain may start gradually, and causes burning, tingling, cramping, or numbness. Symptoms often occur after you have been walking or standing for a period of time. It may fell like you're stepping on a lamp cord. You may need to take your shoe off and rub your foot. In some cases, the pain radiates from the tip of the toes to the ankle |  |  | Tests X-rays may be used to identify a possible neuroma, or to rule out other causes of pain. Ultrasound, which uses sound waves to show internal soft tissue, may also be performed. A diagnostic test, which can also relieve pain, involves blocking the nerve by injecting anesthesia around it. Occasionally, magnetic resonance imaging (MRI) may be performed to reveal cross-sectional images of soft tissue and bone. |  | | |