The most common cause of pain in the heel of the foot is plantar fasciitis, a condition where the thick band of tissue running along the bottom of your foot develops tiny tears from repeated stress. But heel pain has over a dozen possible causes, and where exactly you feel it, when it flares up, and how it behaves with movement all point toward different underlying problems.
Plantar Fasciitis: The Most Common Cause
The plantar fascia is a tough strip of connective tissue that connects your heel bone to the base of your toes, supporting the arch of your foot with every step. When this tissue is overstressed, microscopic tears develop where it attaches to the heel bone. Over time, reduced blood flow to the damaged area makes it harder for cells to repair themselves, and the tissue degrades rather than heals. This is why plantar fasciitis can linger for months if left unaddressed.
The hallmark symptom is a sharp, stabbing pain on the bottom of the heel that’s worst with your first few steps in the morning. It typically eases as you move around, then returns after long periods of sitting or standing. Stretching often provides temporary relief. Most people recover within several months using a combination of icing, stretching, supportive shoe inserts, and night splints. For stubborn cases, your doctor may recommend a more targeted approach.
Heel Spurs Are Rarely the Actual Problem
Many people who get an X-ray for heel pain are told they have a heel spur, a small bony growth on the underside of the heel bone. It sounds alarming, but heel spurs show up on imaging in 10% to 63% of people who have no pain at all. Having a spur doesn’t mean it’s causing your symptoms. In most cases, the spur is a byproduct of long-term stress on the plantar fascia, not the source of the pain itself. Treatment focuses on the inflamed soft tissue, not the spur.
Achilles Tendon Problems
If your pain is at the back of the heel rather than the bottom, the Achilles tendon is a likely culprit. This tendon, which connects your calf muscles to your heel bone, can develop problems in two distinct zones. Insertional tendinopathy affects the lowest portion of the tendon, within about 2 centimeters of where it attaches to the heel. Midportion tendinopathy hits higher up, roughly 2 to 7 centimeters above the heel.
Both types cause similar levels of pain and disability, but insertional tendinopathy involves more structural damage. In one study, calcifications were present in over 94% of insertional cases compared to about 56% of midportion cases. Insertional pain tends to flare when you press on the back of the heel or push off during walking. It’s especially common in runners and people who suddenly increase their activity level.
Stress Fractures
A stress fracture in the heel bone (calcaneus) can mimic plantar fasciitis, but the pain behaves differently. While plantar fasciitis eases with movement, stress fracture pain gets worse the more you’re on your feet and improves when you rest. Swelling around the heel is another signal pointing toward a fracture rather than soft tissue inflammation. A simple squeeze test can help distinguish the two: if pressing the sides of your heel bone between your thumb and fingers causes pain, a stress fracture is more likely. Stress fractures are most common in runners, military recruits, and anyone who ramps up high-impact activity quickly.
Nerve Compression in the Ankle
Tarsal tunnel syndrome is a lesser-known cause of heel pain that occurs when the tibial nerve gets compressed as it passes through a narrow space behind the inner ankle bone. This tunnel is formed by bone on one side and a band of connective tissue on the other. Inside it, the tibial nerve splits into smaller branches that supply feeling to the heel, sole, and toes.
The pain from tarsal tunnel syndrome feels different from plantar fasciitis. Instead of a sharp, localized stab under the heel, you’ll notice burning, tingling, or a pins-and-needles sensation that can radiate from the inner ankle down into the heel, sole, and toes. Some people also develop increased sensitivity where even light touch feels uncomfortable. This condition is sometimes triggered by flat feet, ankle injuries, or anything that takes up extra space inside the tunnel, like swelling or a cyst.
Heel Fat Pad Syndrome
Your heel bone sits on a specialized cushion of fat that absorbs shock with every step. Over time, this pad can thin out or lose its elasticity, leaving the bone less protected. The result is a deep, bruise-like ache in the center of the heel that worsens when walking on hard surfaces or standing barefoot.
Age is the primary driver. The fat pad naturally shrinks as you get older, and years of impact gradually break down its structure. Repeated corticosteroid injections into the heel (often given for plantar fasciitis) can accelerate this breakdown, which is one reason doctors limit how many injections they’ll give in a single area. Unlike plantar fasciitis, fat pad pain doesn’t have the classic “worst first thing in the morning” pattern. It tends to be more constant and directly tied to how much time you spend on your feet.
Heel Pain in Children and Teenagers
In kids going through growth spurts, heel pain is commonly caused by Sever’s disease, an irritation of the growth plate at the back of the heel. It’s not actually a disease. It’s a temporary overuse condition that happens because the heel bone grows faster than the muscles and tendons attached to it. The resulting tightness puts extra stress on the growth plate, especially during sports and other weight-bearing activities.
Girls are most commonly affected between ages 8 and 10, while boys typically develop it between 10 and 12. The pain usually shows up during or after physical activity and resolves once the growth plate fully hardens, which happens naturally as the child finishes growing. In the meantime, reducing high-impact activity, using heel cushions, and stretching the calf muscles usually controls the symptoms.
Inflammatory and Autoimmune Conditions
Heel pain can occasionally be an early sign of a systemic inflammatory condition. Rheumatoid arthritis, ankylosing spondylitis, psoriatic arthritis, reactive arthritis (formerly called Reiter’s syndrome), gout, and lupus can all cause inflammation at the heel. Most people with these conditions also have joint pain elsewhere in the body, but symptoms sometimes start in the heel before appearing in other joints.
Certain patterns raise suspicion. A young man with bilateral heel pain and a history of eye inflammation or urinary tract issues may have reactive arthritis. Heel pain in someone with psoriasis and asymmetric pain in the finger or toe joints suggests psoriatic arthritis. If your heel pain doesn’t respond to the usual treatments, or if you notice pain and swelling in other joints, stiffness that’s worst in the morning and lasts more than 30 minutes, or unexplained fatigue, a broader evaluation may be warranted.
How to Narrow Down the Cause
The location and timing of your pain are the most useful clues:
- Bottom of the heel, worst in the morning: plantar fasciitis is the leading suspect.
- Back of the heel, worse with pushing off: Achilles tendinopathy, particularly the insertional type.
- Center of the heel, deep ache on hard floors: fat pad atrophy or bruising.
- Burning or tingling into the sole: nerve compression such as tarsal tunnel syndrome.
- Pain that worsens with activity and improves with rest: possible stress fracture.
- Both heels plus joint pain elsewhere: consider an inflammatory or autoimmune condition.
Many of these conditions overlap in symptoms, and it’s possible to have more than one at the same time. If your pain hasn’t improved after a few weeks of rest, icing, and supportive footwear, imaging or a physical exam can help pin down the specific cause and guide treatment in the right direction.