What is a common cause of Morton's neuroma?

Morton's neuroma is a condition characterized by the thickening of tissue around one of the nerves leading to the toes, commonly between the third and fourth toes. A primary factor in its development is the wearing of tight footwear. Tight shoes can compress the toes and the surrounding nerves, leading to irritation and inflammation. This repetitive pressure can cause the nerve to enlarge, resulting in the characteristic pain associated with Morton's neuroma.

While excessive running or sports activity can contribute to the formation of Morton's neuroma by increasing foot stress, the direct cause is more closely linked to footwear choices. High blood pressure and allergic reactions are not related to the development of this condition, making tight footwear the most relevant and acknowledged cause in this scenario.