Heel pain is usually focused on the underside or the back of your heel. If your pain is on the underside of your heel, its likely cause is plantar fasciitis. Pain on the back of your heel, where the Achilles tendon attaches to the heel bone, is Achilles tendinitis. Although heel pain is rarely a symptom of a serious condition, it can interfere with your normal activities, particularly exercise.
What Are Common Causes of Heel Pain?
Heel pain has a number of causes that are typically associated with overuse of the heel bone. You can strain your heel by pounding your feet on hard surfaces, being overweight, or wearing shoes that do not fit properly.
These strains can irritate the heel’s bones, muscles, or tendons. Other common causes of heel pain include the following.
- Heel Spurs: A bony growth on the underside of the heel bone. The spur, visible by X-ray, appears as a protrusion that can extend forward as much as half an inch. When there is no indication of bone enlargement, the condition is sometimes referred to as “heel spur syndrome.” Heel spurs result from strain on the muscles and ligaments of the foot, by stretching of the long band of tissue that connects the heel and the ball of the foot, and by repeated tearing away of the lining or membrane that covers the heel bone. These conditions may result from biomechanical imbalance, running or jogging, improperly fitted or excessively worn shoes, or obesity.
- Plantar Fasciitis: Both heel pain and heel spurs are frequently associated with plantar fasciitis, an inflammation of the band of fibrous connective tissue (fascia) running along the bottom (plantar surface) of the foot, from the heel to the ball of the foot. It is common among athletes who run and jump a lot, and it can be quite painful.
The condition occurs when the plantar fascia is strained over time beyond its normal extension, causing the soft tissue fibers of the fascia to tear or stretch at points along its length; this leads to inflammation, pain, and possibly the growth of a bone spur where the plantar fascia attaches to the heel bone. The inflammation may be aggravated by shoes that lack appropriate support, especially in the arch area, and by the chronic irritation that sometimes accompanies an athletic lifestyle.
Resting provides only temporary relief. When you resume walking, particularly after a night’s sleep, you may experience a sudden elongation of the fascia band, which stretches and pulls on the heel. As you walk, the heel pain may lessen or even disappear, but that may be just a false sense of relief. The pain often returns after prolonged rest or extensive walking.