Heel pain most often comes from plantar fasciitis, a condition caused by wear and tear on the thick band of tissue that runs along the bottom of your foot. But several other structures in and around the heel can generate pain, and pinpointing the location, timing, and quality of your discomfort is the fastest way to narrow down the cause.
Plantar Fasciitis: The Most Common Cause
About one in 10 people will deal with plantar fasciitis at some point in their lives. Despite the name (which suggests inflammation), the condition is actually a degenerative process. When tissue samples are examined under a microscope, they show fragmentation and breakdown of the plantar fascia rather than the classic signs of inflammation. In other words, it’s less like a fresh injury and more like accumulated damage from repetitive stress.
The hallmark symptom is a stabbing pain on the bottom of the heel, usually at its worst during your first steps in the morning or after sitting for a long time. The pain tends to ease up once you’ve walked around for a few minutes, because movement temporarily loosens the tissue. Standing for long stretches or getting up after a movie or a long drive often brings the pain right back.
Risk factors include carrying extra body weight, spending long hours on your feet (especially on hard surfaces), having very flat feet or very high arches, and tight calf muscles that pull on the heel. Runners and people who suddenly ramp up their walking or exercise routine are particularly prone to it.
The good news is that most cases improve with conservative measures. Stretching your calves and the bottom of your foot, wearing supportive shoes, using over-the-counter insoles, and icing the heel after activity are the first-line approaches. Most people see meaningful improvement within 4 to 12 weeks. Acute cases that have been present for less than six weeks often respond well to rest, stretching, and footwear changes alone. Cases that drag on for months may need more targeted treatments like physical therapy or custom orthotics.
Heel Spurs: Not Always the Culprit
Many people assume a bony heel spur is causing their pain, but the relationship between spurs and symptoms is surprisingly weak. Heel spurs show up on X-rays in about 15% of people who have zero heel pain. Of everyone walking around with a spur, less than 5% actually experience pain from it. The spur itself is usually a byproduct of long-term tension on the plantar fascia, not the direct source of the problem.
That said, roughly three-quarters of people who do have heel pain will have a visible spur on imaging. This creates a confusing picture: the spur and the pain coexist, but treating the spur specifically (rather than the soft tissue problem causing it) rarely helps. If you’ve been told you have a heel spur, the underlying tissue damage is almost always what needs attention.
Achilles Tendon Problems
Pain at the back of the heel, rather than the bottom, often points to the Achilles tendon. There are two distinct patterns depending on where the damage sits.
Insertional Achilles tendinitis affects the lower portion of the tendon, right where it anchors into the heel bone. You’ll feel pain and sometimes a hard bump at the back of the heel. Bone spurs frequently develop at this attachment point, and they’re visible on X-rays. This type can affect anyone, including people who aren’t particularly active.
Non-insertional Achilles tendinitis involves the middle portion of the tendon, a couple of inches above the heel. The fibers in this area begin to break down, causing pain and sometimes visible swelling in the tendon itself. In severe cases, X-rays may show calcification forming within the tendon. This type is more common in younger, active people.
Both forms tend to develop gradually. You might notice stiffness and soreness in the morning that loosens with gentle movement, then worsens again after exercise or prolonged activity. Tight calf muscles, a sudden jump in training intensity, and shoes with poor heel support all contribute.
Nerve-Related Heel Pain
If your heel pain comes with burning, tingling, numbness, or a “pins and needles” sensation, a nerve problem may be involved. Tarsal tunnel syndrome occurs when the tibial nerve, which runs through a narrow passage on the inside of your ankle, becomes compressed or damaged. The symptoms typically radiate into the bottom of the foot and toes, and you may also notice weakness in the small muscles of your foot.
Nerve pain feels distinctly different from the aching or stabbing of a tissue injury. It’s often described as electric, burning, or buzzing. It can worsen at night or after long periods of standing. Flat feet, swelling from an ankle injury, and conditions like diabetes that affect nerve health can all increase your risk.
Stress Fractures in the Heel Bone
A calcaneal stress fracture is a small crack in the heel bone itself, caused by repetitive impact rather than a single traumatic event. This is a concern for runners, military recruits, and anyone who dramatically increases their activity level over a short period. People with low bone density are also at higher risk.
The pain from a stress fracture tends to be deep, achy, and present during all weight-bearing activity. It doesn’t have the classic “worst in the morning, better after walking” pattern of plantar fasciitis. One simple clue: if squeezing both sides of your heel with your hands reproduces the pain, a stress fracture becomes more likely. However, this squeeze test is better at ruling a fracture in than ruling it out, so imaging (typically an MRI) is often needed to confirm the diagnosis.
Heel Pain in Children and Teens
If your child complains of heel pain, the most likely explanation is Sever’s disease, which is the most common cause of heel pain in growing kids. It’s especially prevalent between ages 8 and 14, when growth spurts put stress on the growth plate at the back of the heel bone. A tight Achilles tendon makes it worse by constantly pulling on that growth plate every time the foot flexes.
Kids who play high-impact sports on hard surfaces, like basketball, soccer, gymnastics, or track, are the most affected. The pain typically shows up during or after activity and improves with rest. Despite the alarming name, Sever’s disease isn’t a true disease. It’s a temporary overuse condition that resolves on its own once the growth plate fully hardens, usually by the mid-teen years. Reducing activity, stretching the calf muscles, and using heel cups in shoes can help manage the discomfort in the meantime.
Bursitis and Fat Pad Damage
Your heel has a built-in cushioning system: a thick pad of fat beneath the heel bone and small fluid-filled sacs called bursae that reduce friction between bones and tendons. Either of these can become a pain source.
Retrocalcaneal bursitis is inflammation of the bursa that sits between the Achilles tendon and the heel bone. It causes a deep, achy pain at the back of the heel that worsens when you push off while walking or running. Tight or rigid shoes that press into the back of the heel are a common trigger.
Fat pad atrophy is a gradual thinning of the cushion under your heel. It becomes more common with age, and it produces a bruise-like pain on the bottom of the heel that’s worst when walking on hard surfaces. Unlike plantar fasciitis, the pain doesn’t have a strong morning-stiffness component. It feels more like you’re walking directly on bone. Cushioned shoes and padded heel inserts provide the most relief.
How to Tell the Difference
Location is the single most useful clue. Pain on the bottom of the heel, worst with your first morning steps, points strongly toward plantar fasciitis. Pain at the back of the heel suggests the Achilles tendon or bursitis. Deep, diffuse pain that worsens with any weight-bearing activity and responds to a side squeeze could be a stress fracture. Burning or tingling that radiates into the toes suggests nerve involvement.
Timing matters too. Pain that’s worst in the morning and improves with movement is a plantar fasciitis signature. Pain that builds throughout the day and worsens with activity points more toward a structural problem like a stress fracture, tendon breakdown, or fat pad thinning. Pain that flares at night or at rest, especially with numbness, leans toward a nerve issue.
Most heel pain responds to a combination of rest, stretching, supportive footwear, and patience. But pain that doesn’t improve after several weeks of self-care, that’s getting progressively worse, or that comes with swelling, bruising, or numbness warrants a professional evaluation to rule out conditions that need targeted treatment.