Back-of-Heel Versus Bottom-of-Heel Pain

Why location narrows down heel pain so effectively

The heel is small, but it sits at the meeting point of several unrelated structures — a fibrous band along the sole, a tendon running down the back, small cushioning bursae, and the heel bone itself — and pain from each one tends to show up in a fairly consistent, separate spot. That makes location the fastest sorting tool for heel pain: bottom-of-heel pain and back-of-heel pain point to almost entirely different problems, with only rare overlap between them. Getting the location right is usually enough to know roughly what's going on before considering anything else.

Bottom-of-heel pain: plantar fasciitis and other causes

Pain felt directly under the heel, especially first thing in the morning or after getting up from sitting, is plantar fasciitis until proven otherwise — it is by far the most common cause of heel pain 1Ref 1American Academy of Orthopaedic Surgeons (OrthoInfo) (2024).Plantar Fasciitis and Bone Spurs.That plantar fasciitis is a common cause of heel pain classically worst with first morning steps, and that more than 90% of patients improve within about 10 months of simple nonsurgical treatment.. Plantar fasciitis is irritation of the thick band of tissue that runs along the sole of the foot and supports the arch, and the pain classically eases somewhat after the first several steps, only to return later after standing or walking for a long stretch. More than 90% of people improve within about ten months using simple measures such as stretching, supportive footwear, and activity modification 1Ref 1American Academy of Orthopaedic Surgeons (OrthoInfo) (2024).Plantar Fasciitis and Bone Spurs.That plantar fasciitis is a common cause of heel pain classically worst with first morning steps, and that more than 90% of patients improve within about 10 months of simple nonsurgical treatment., and stretching, manual therapy, and supportive orthoses all have good evidence behind them for easing the pain 2Ref 2Koc TA Jr, Bise CG, Neville C, et al. (2023).Heel Pain — Plantar Fasciitis: Revision 2023 (Clinical Practice Guidelines Linked to the ICF).That strong evidence supports manual therapy, stretching, and foot orthoses to reduce pain and improve function in plantar fasciitis..

Other, less common causes of bottom-of-heel pain include a bruised or thinning heel fat pad, which tends to ache more diffusely across the whole underside of the heel, and — in someone who has recently increased running mileage sharply — a stress fracture of the heel bone, which tends to hurt with any weight-bearing rather than easing after the first steps.

Back-of-heel pain: Achilles tendinopathy and related causes

Pain at the back of the heel, where the Achilles tendon meets the heel bone or a couple of inches above it, usually points to a problem with the tendon itself rather than the sole. Achilles tendinopathy causes an aching, sometimes stiff pain that is often worse first thing in the morning and after periods of rest, then eases somewhat with gentle movement — similar in timing to plantar fasciitis, but higher up and further back. A tender, sometimes visibly enlarged bump right where the tendon inserts can point to a related problem: irritation of the bursa that cushions the tendon, or a bony prominence at the back of the heel that rubs against footwear.

Morning pain versus pain that builds through the day

Both plantar fasciitis and Achilles-related heel pain often share a telltale morning pattern: pain that is sharpest with the first steps after getting up or after sitting for a while, then eases somewhat once the tissue warms up. What differs is what happens later. Plantar fasciitis pain classically returns after standing or walking for a long stretch, while Achilles pain from overuse tends to build gradually during an activity, such as a run, and can ache afterward rather than during. A heel stress fracture breaks that morning pattern entirely — it tends to hurt with any weight-bearing from the start, without the classic first-steps improvement.

What raises the risk of each

Bottom-of-heel pain is more likely with tight calf muscles, a sudden jump in walking or running distance, prolonged standing on hard floors, and either very flat or very high arches, all of which change how much strain the plantar fascia absorbs with each step. Back-of-heel pain shares several of the same risk factors — a tight or weak calf, a sudden increase in running or jumping, and stiff-heeled footwear that rubs against the tendon or the bony prominence behind it. In growing children and early teens, though, back-of-heel pain more often comes from irritation of the growth plate at the back of the heel bone rather than from the tendon itself, a distinct condition that behaves differently from adult Achilles problems and usually settles as the growth plate matures.

What helps early on, for either

For both conditions, the early conservative approach looks similar: calf and foot stretching, a gradual rather than abrupt return to running or standing activity, and supportive footwear with some cushioning at the heel. Ice after activity and a temporary reduction in high-impact exercise are common first steps for either condition, and most people notice steady improvement over some weeks rather than an overnight fix. None of this requires pinning down the exact structure involved first — the initial approach overlaps enough that a precise diagnosis mostly matters if pain isn't easing as expected.

Other clues: swelling, a visible lump, and pain with pushing off

A few additional details help confirm which structure is involved. Swelling and tenderness along the back of the heel, worse when pushing up onto the toes, points toward the Achilles side. A firm, tender lump at the very back of the heel bone, sometimes rubbing on the heel counter of a shoe, suggests a bony prominence rather than tendon inflammation alone. Pain confined to a small area directly under the heel bone, without much tenderness along the arch itself, is more typical of plantar fasciitis than of a fat pad problem.

When heel pain needs more than home care

Heel pain that hasn't started improving after several weeks of simple measures — supportive shoes, stretching, and reduced high-impact activity — is worth having examined rather than pushed through indefinitely, since the workup differs depending on which structure is involved. This is especially true if the standard approach for plantar fasciitis or Achilles pain isn't at least somewhat helping, since persisting with the wrong working diagnosis wastes time either way. For heel pain that doesn't fit either pattern cleanly, it helps to read about when heel pain isn't plantar fasciitis, which walks through the fuller heel pain differential beyond these two common causes, as one piece of the broader picture of foot and ankle pain.