Plantar fasciitis is an inflammation of a thick band of tissue (called the plantar fascia) that connects the heel bone to the toes. If you strain your plantar fascia, it gets weak, swollen and irritated or inflamed. As a result, your heel or the bottom of your foot hurts when you stand or walk. This inflammation is the most common cause of heel pain. Around one in 10 people will develop plantar fasciitis at some time in their life, and it is seen regularly among middle-aged people, athletes or people who are on their feet a lot. It is twice as common in women as it is in men. You are also more likely to develop plantar fasciitis if you have pronated feet, high arches, are overweight or wear ill fitting or worn out shoes. Pain is the main symptom, and it is often at its worst when you take your first steps after getting up in the morning, or after long periods of rest where no weight is placed on your foot.