Morton's neuroma is a condition that affects one of the nerves between the toes resulting in pain in the ball of the foot. It's also known as Morton's metatarsalgia or interdigital neuroma. This condition is caused by the irritation and thickening of a nerve between the toes, usually between the 3rd and 4th toe but, occasionally experience between the 2nd and 3rd toes also in one or both feet. Women seem to be the most common sufferers of this condition, being wearers of high heels and putting excessive pressure on their feet but, runners are increasingly showing signs of this condition also.
Sufferers of this conditions would benefit from footwear with a rubber sole or padded rocker sole.