Quick answer: A lump on your heel is usually caused by a bony bump (Haglund's deformity), a heel spur, an irritated Achilles tendon, or, in growing kids, an inflamed growth plate. Most heel bumps are not dangerous, but any lump that hurts, grows, or changes deserves a professional exam.
What Causes a Lump on the Heel?
The heel takes more pounding than any other part of the foot, so it develops bumps for several different reasons. The most common causes we see in our Safford and Sierra Vista offices include:
- Haglund's deformity: a hard, bony enlargement on the back of the heel, often called a pump bump because stiff shoe backs rub against it
- Achilles problems: the tendon can thicken or calcify where it attaches to the heel, which feels like a firm bump; this is a form of Achilles tendonitis
- Bursitis: a small fluid sac behind the heel swells from friction and feels like a tender, squishy knot
- Heel spurs: a heel spur under the heel usually causes pain more than a bump you can feel, but the two often get confused
- Piezogenic papules: small, soft bumps along the edge of the heel that appear when you stand, caused by fat pressing through the tissue; usually harmless
In children and young teens, a painful heel is often Sever's disease, an irritated growth plate. It is one of the most common issues we treat in pediatric foot care, especially in active kids ages 8 to 14.
How Can You Tell What Your Heel Bump Might Be?
Location and behavior offer good clues. A hard bump on the back of the heel that hurts in closed shoes points to Haglund's deformity. Pain and thickening right where the Achilles meets the heel, worse when you push off, suggests a tendon problem. Small soft bumps that only show when standing are usually piezogenic papules. A sore heel in an active child during a growth spurt often means an irritated growth plate.
Watch for warning signs too. A lump that grows quickly, hurts at night, changes color, or appears without any clear cause should be examined promptly rather than watched at home.
What Helps a Heel Bump at Home?
Start by removing the friction. Choose shoes with soft or open backs for a few weeks, and add a small heel lift to both shoes to take tension off the Achilles. Ice the area for 10 to 15 minutes after activity, stretch your calves daily, and cut back on hills and sprinting while things calm down. For kids, a short break from repetitive jumping and running often makes a big difference.
Never try to cut, drain, or pop a bump yourself. That risks infection and rarely fixes the cause.
How We Diagnose and Treat Heel Bumps
An exam usually narrows things down quickly, and our on-site X-rays let us see the bone and any calcification during the same visit. Treatment depends on the cause. We may recommend padding and shoe changes, heel lifts, custom supports, a stretching program, anti-inflammatory care, or a walking boot to rest a badly irritated tendon. Growth plate pain in kids typically settles with activity changes, stretching, and heel cushions. Surgery is reserved for bony bumps that keep causing pain after months of dedicated non-surgical care.
When Should You See a Podiatrist?
Have a bump checked if it has been painful for more than two weeks, keeps you from wearing normal shoes, or makes you limp. Come in promptly if the lump is growing, red, warm, or numb, if your child is avoiding sports because of heel pain, or if you have diabetes and notice any new bump or sore. As a simple rule, any lump you cannot explain deserves one professional look.
Frequently Asked Questions
Can a lump on the heel be cancer?
It is possible but rare. The vast majority of heel bumps come from bone shape, tendons, friction, or fat pads, all of which are benign. Even so, a lump that grows steadily, hurts at night, or does not match the common patterns should be examined and imaged so nothing serious is missed.
Will my child outgrow a painful heel?
Usually, yes. Growth plate irritation ends once the heel bone finishes growing, typically by the mid-teens. Until then, symptoms respond well to activity adjustments, calf stretching, and heel cushions. If your child limps, sits out sports, or hurts for more than a couple of weeks, an exam helps rule out other causes.
Does a Haglund's bump ever go away on its own?
The bony enlargement itself does not shrink, but that is not the real problem. Pain comes from the irritated tissue between the bone and your shoe, and that inflammation can settle with better footwear, heel lifts, and stretching. Most people control symptoms fully without surgery, even though the bump remains.
This article is general education and is not a substitute for an exam with a podiatrist.
If a bump on your heel has you concerned, Mountain Vista Foot & Ankle can give you a clear answer. Request an appointment online, or call our Safford office at (928) 348-3700 or our Sierra Vista office at (520) 515-3668.
