There are a few different things that can cause metatarsalgia, or pain in the metatarsal bones. One of the more common causes is Morton's neuroma, which is a condition that affects the nerves. This can be caused by anything from wearing high heels to having an injury. Another common cause of metatarsalgia is stress fractures. These are tiny cracks in the bones that can be caused by overuse or repetitive motion. Treatment for metatarsalgia usually involves resting the foot and wearing comfortable shoes. In some cases, you may need to wear a special boot or cast. If you have a stress fracture, you may need to take breaks from your regular activities and use crutches.