Plantar fasciitis is a condition that causes heel pain and is caused by inflammation of the plantar fascia, which is a thick band of tissue that runs along the sole of the foot and connects the heel bone to the toes. The plantar fascia supports the arch of the foot and absorbs shock when walking, and tension and stress on the fascia can cause small tears, leading to irritation or inflammation. Plantar fasciitis commonly causes stabbing pain that often occurs with the first steps in the morning and can be triggered by activities that place a lot of stress on the heel and attached tissue, such as long-distance running. The pain tends to be the worst when you get up in the morning or after other periods of inactivity, and it can become worse after prolonged or vigorous activity. Some risk factors for plantar fasciitis include age, certain types of exercise, the structure or shape of the foot, the surface on which you are standing, walking or running, the type of shoes you are wearing, and the weight you carry. Plantar fasciitis can usually be treated at home with over-the-counter medications, icing, rest, and stretching, but its important to confirm the diagnosis with a healthcare provider to rule out other conditions that can cause similar foot pain.