A Morton’s Neuroma is essentially an intermittently trapped nerve in the foot where it becomes enlarged due to the irritation to the nerve tissue. In the early stage it is referred to as metatarsalgia as often there is no change to the nerve.
It is history of the pain that helps with the diagnosis. It feels like pins and needle, burning or a stone but during activity may progress to a sharp pain, often relieved just by taking the shoes off .