What causes plantar fasciitis?

Plantar fasciitis is a tendinopathy of the plantar fascia at its calcaneal attachment, driven by repetitive tensile load. Contributing factors include sudden increases in activity, prolonged standing on hard surfaces, tight calf muscles, high or low arches, obesity, and inappropriate footwear.

What are the most evidence-supported treatments?

Consistent calf and plantar fascia stretching shows good evidence. Eccentric loading exercises for the calf complex promote tissue remodelling. Acupuncture has emerging evidence. Night splints maintain the fascia in a lengthened position overnight, reducing morning pain. Custom orthotics reduce load at the insertion point.

Why is morning pain so characteristic of plantar fasciitis?

During sleep the plantar fascia shortens. The first weight-bearing steps place sudden tensile load through the shortened tissue, causing sharp heel pain that typically eases as the fascia warms up. Performing plantar fascia and calf stretches before getting out of bed can significantly reduce this first-step pain.

How long does plantar fasciitis take to resolve?

Plantar fasciitis is typically slow to improve — most cases resolve within 6–18 months. Consistent daily stretching and load management are more predictive of recovery than any single treatment. Gradually loading the tissue rather than resting completely is the most effective long-term approach.

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Plantar fasciitis

Plantar fasciitis is a common condition with pain and inflammation in the heel

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Reviewed by Dr. Ian Henderson · Microbiobial Health & Medicine26 March 2026Emerging evidence

Quick answer

Plantar fasciitis is a common condition with pain and inflammation in the heel

Do any of these feel familiar?

People often experience heel pain, stiffness, and limited mobility

What is Plantar fasciitis?

Inflammation of the foot tissue.

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Overview

Symptoms & Affected Systems

Contributing Factors

Supporting Lifestyle Strategies

Evidence Context

When to Seek Professional Help

Related Conditions

Tendinopathy

Musculoskeletal Pain

Patellar Tendinitis

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