Plantar Fasciitis Symptoms: What It Feels Like and Why

Quick answer

Sharp heel pain with the first steps of the day that eases, then aches after activity

Typical symptoms are pain on the bottom of the heel or along the arch, worst with the first steps in the morning or after rest, easing after a few minutes of walking and returning after long periods on your feet. The heel is tender when pressed on the inner side. It is usually caused by overload of the plantar fascia, the thick band of tissue that supports the arch, and is linked to sudden increases in walking or running, prolonged standing, weight gain, tight calves and unsupportive shoes. Diagnosis is based on symptoms and examination; scans are rarely needed. Stretching, supportive shoes or insoles, taping, activity changes and strengthening help most people.

Important. See a doctor promptly if heel pain followed an injury, there is swelling, redness or heat, numbness or tingling in the foot, pain at night or at rest, fever, or if you have diabetes.

What is plantar fasciitis?

The plantar fascia is a strong band of connective tissue running from the heel bone to the base of the toes. It supports the arch and acts like a spring when you walk. When it is loaded more than it can adapt to, the tissue near the heel becomes painful and thickened. Although “-itis” suggests inflammation, the condition is better described as degeneration from overload, which is why some clinicians prefer the term plantar fasciopathy or plantar heel pain.

Typical symptoms

Sharp, stabbing or bruise-like pain under the heel, usually toward the inner side.
Pain worst with the first steps in the morning or after sitting (“first-step pain”).
Pain that eases after walking for a few minutes but returns after long periods of standing or activity.
Tenderness when you press the bottom of the heel.
Pain when pulling the toes up toward the shin.
Pain usually in one foot, although both can be affected.
Mild swelling may occur, but significant swelling, bruising or numbness suggests another cause.

What does plantar fasciitis feel like?

Many people describe it as stepping on a stone or a nail, or as a deep bruise. The first few steps out of bed can be so painful that people limp or walk on their toes, then the pain settles to a dull ache. Long walks, standing on hard floors and running can bring it back. Symptoms often build gradually over weeks rather than starting with a specific injury. If pain is felt at the back of the heel rather than underneath, it is more likely to be the Achilles tendon; see our guide to Achilles tendonitis.

Causes and risk factors

Sudden increase in walking, running or standing.
Jobs that involve many hours on your feet, especially on hard surfaces.
Higher body weight.
Tight calf muscles and reduced ankle flexibility.
Flat feet or very high arches.
Unsupportive, worn or very flat footwear, or walking barefoot on hard floors.
Age between about 40 and 60, although it occurs in younger athletes too.

How it is diagnosed

Diagnosis is clinical, based on the typical history and tenderness at the inner heel. Clinical guidelines advise against routine imaging. X-rays may show a heel spur, but spurs are common in people without pain and do not cause the symptoms on their own. Ultrasound can show a thickened fascia if the diagnosis is uncertain, and MRI or blood tests are used when another condition is suspected.

What else could it be?

Fat pad syndrome: pain in the centre of the heel, worse barefoot on hard floors.
Calcaneal stress fracture: pain on squeezing the sides of the heel, often after a training increase.
Nerve entrapment (Baxter’s nerve or tarsal tunnel): burning, tingling or numbness.
Achilles problems: pain at the back of the heel.
Inflammatory arthritis: heel pain in both feet with stiffness elsewhere.
Pain spreading down the leg from the back may come from the lower back.

Treatments that work

Stretching: calf stretches against a wall and plantar fascia stretches (pulling the toes back while seated), several times a day.
Strengthening: slow heel raises with a towel under the toes, progressing over weeks.
Footwear: cushioned, supportive shoes; avoid going barefoot on hard floors.
Insoles and heel cups: off-the-shelf orthoses can help in the short term.
Taping: low-dye taping supports the arch for a few weeks.
Activity changes: reduce running and long standing temporarily; cycling and swimming keep fitness.
Night splints for persistent morning pain.
Shockwave therapy for pain lasting more than a few months; injections are reserved for selected cases.
Our guide to shin pain after running covers training load principles that also apply here.

Three common situations

New runner, heel pain after six weeks: a rapid build-up in distance is a typical trigger. Cutting mileage for a few weeks, calf stretching and slow heel raises usually allow a gradual return.
Shop worker standing all day: cushioned shoes, an off-the-shelf insole, short sitting breaks and stretching before the first steps in the morning often make a clear difference within weeks.
Pain in both heels with stiff hands in the morning: this pattern deserves a medical check for inflammatory arthritis rather than treatment as simple plantar fasciitis.

Key points to remember

First-step heel pain in the morning is the classic symptom.
It is an overload problem of the plantar fascia.
Scans are rarely needed for diagnosis.
Stretching, strengthening, good footwear and patience help most people.

Questions about plantar fasciitis symptoms

These answers are general information and do not replace an examination or individual medical advice.

How do you know if you have plantar fasciitis?

The typical sign is sharp pain under the heel with the first steps after rest that eases with walking, plus tenderness when pressing the inner heel. A clinician can confirm it on examination.

Does plantar fasciitis cause swelling?

Mild swelling can occur, but obvious swelling, bruising or heat suggests a different problem, such as a fracture or inflammation, and should be checked.

Is heat or ice better for plantar fasciitis?

Both may ease pain. Many people find rolling the foot over a frozen water bottle soothing after activity, while warmth helps morning stiffness before stretching.

How long does plantar fasciitis last?

Most people improve within 6 to 12 months, often much sooner with consistent stretching, strengthening and footwear changes.

Can plantar fasciitis affect both feet?

Yes, in about a third of cases. Pain in both heels with stiffness in other joints should prompt a check for inflammatory arthritis.

Sources

This guide is for general information and does not replace medical advice. How a problem is diagnosed and treated depends on your examination and medical history. If you think you have an emergency, contact your local emergency services.