Pain in the ball of your foot, especially between the third and fourth toes, is a foot condition called Morton’s Neuroma. It occurs in the forefoot where the tissue thickens around the nerves leading to the toes. Symptoms include either a burning sensation, sharp pain, tingling, numbness, or cramping in the foot. Frequent constant pressure on this area can develop a benign tumor or hard ball under the skin. They are usually fibrous tissue formation. Wearing shoes that put pressure in the area, especially high heels, and playing some sports seems to lead to the condition. Doctors advise changing shoes or wear insoles.