The most common symptom of Morton's neuroma is a localized pain in the interspace between the third and fourth toes caused by an enlarged nerve. It can be sharp or dull and you usually notice it more when walking or by wearing tight shoes. Some people feel like they are walking on a pebble, or that they have a wrinkle in their sock.
To diagnose the neuroma the Dr. will probably palpate the area to see if he can elicit pain by squeezing the toes from the side. Then he may try to feel the neuroma by pressing a thumb into the interspace.
An x-ray will probably be taken to rule out any kind of fractures and to rule out arthritis.
An MRI determines if there is an neuroma and the size of it. The Dr. can then determine how to treat the condition. Injections can be given to shrink the enlarged nerve or possibly surgery to excise it.