It occurs most frequently with the second toe, often when a bunion slants the big toe toward and under it, but any of the other three smaller toes can be affected. Although the condition usually stems from muscle imbalance, ill-fitting shoes or socks that cramp the toes often aggravate it. Heel pain generally occurs when too much stress is placed on the heel bone or nerves in the area. This can come from walking or jumping on hard surfaces, or from poorly made footwear. Some general health conditions like arthritis, gout, and circulatory problems can also cause heel pain.
Heel spurs are growths of bone on the underside of the heel bone.
While they can occur without pain, pain may result when inflammation develops at the point where the spur forms. Both heel pain and heel spurs are often due to plantar fasciitis, an inflammation of the long band of connective tissue running from the heel to the ball of the foot. Ingrown nails are nails whose corners or sides dig painfully into the skin. They are frequently caused by improper nail trimming, but also by shoe pressure, injury, fungus infection, heredity, and poor foot structure. Warts are caused by a virus that enters the skin through small cuts and infects the skin.