Plantar fasciitis is an inflammation of the bottom of the foot that causes heel and arch pain. Also known as a “heel spur,” plantar fasciitis affects the connective tissue that extends from the base of the toes, through the arch of the foot, to the heel bone. Inflammation of the tissue is usually caused by the constant motion of rolling your foot inward, or “overpronation,” when you walk or run. Most cases of plantar fasciitis can successfully be treated with anti-inflammatory medication, icing the area, stretching and physical therapy. You can avoid developing plantar fasciitis by practicing proper walking and running techniques – your doctor can help you improve your body mechanics in this area and may also prescribe physical therapy.