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Conditions  /  Systemic & Complex
Psoriatic Arthritis
Joint pain, swelling and nail changes affecting the feet are common in psoriatic arthritis. We help diagnose foot involvement early, manage flares, and protect your joints alongside your rheumatology team.
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Overview
What is psoriatic arthritis?

Psoriatic arthritis (PsA) is a chronic autoimmune inflammatory condition that develops in some people with psoriasis, though it can occasionally occur without visible skin symptoms. It causes inflammation in and around joints, tendons and ligaments — and the feet and ankles are among the most commonly affected areas of the body.

Foot involvement in psoriatic arthritis can include joint pain and swelling, enthesitis (inflammation where tendons attach to bone — commonly at the Achilles or plantar fascia), dactylitis ("sausage toe" — diffuse swelling of an entire digit), and nail changes such as pitting, thickening or separation from the nail bed.

Psoriatic arthritis is managed primarily by rheumatology, but podiatry plays an important role in managing foot and ankle symptoms, protecting affected joints, and improving day-to-day comfort and mobility alongside your medical treatment.

Presentation
How it affects the feet
Enthesitis
Inflammation at tendon and ligament attachment points — commonly the Achilles insertion and plantar fascia — causing heel pain that can mimic plantar fasciitis or Achilles tendinopathy.
Dactylitis
Diffuse swelling of an entire toe ("sausage digit") caused by inflammation throughout the joint, tendon sheaths and soft tissue of the digit.
Joint Involvement
Pain, stiffness and swelling in the small joints of the foot, ankle or midfoot — can affect one or multiple joints, often asymmetrically.
Nail Changes
Pitting, ridging, thickening, discolouration or separation of the nail from the nail bed (onycholysis) — frequently associated with underlying joint disease.
Symptoms
What to look out for
Heel pain, particularly at the back or underside of the heel
Swollen, sausage-like toe (dactylitis)
Morning stiffness in foot or ankle joints lasting over 30 minutes
Nail pitting, thickening or lifting from the nail bed
Joint pain and swelling, often asymmetric
Fatigue alongside joint symptoms
Treatment
How we can help

Podiatric management works alongside your rheumatology and dermatology care, not instead of it. Disease-modifying medication is essential for controlling the underlying condition — our role is to manage the mechanical and skin/nail consequences in the foot and reduce day-to-day discomfort.

Orthotics & Offloading
Custom insoles to offload inflamed joints and entheses, redistribute pressure, and reduce mechanical strain on affected structures.
Footwear Advice
Guidance on footwear that accommodates swollen joints and toes, reduces pressure on tender areas, and supports the foot during flares.
Nail & Skin Care
Safe management of nail changes and any associated psoriatic skin involvement on the feet, with appropriate precautions.
Injection Therapy
Corticosteroid injection for localised, persistent enthesitis or joint inflammation not settling with other measures.
Rheumatology Liaison
We work alongside your rheumatology team, sharing findings and referring promptly where foot symptoms suggest active disease requiring medical review.
Self-care
Managing symptoms day to day
01
Wear supportive, well-fitted footwear with a wide, deep toe box during flares
02
Take prescribed disease-modifying medication consistently — this controls the underlying inflammation
03
Apply ice to acutely inflamed joints or entheses during flares
04
Keep a symptom diary — timing and triggers help your rheumatology team adjust treatment
When to act
When should I get assessed?

If you have psoriasis and develop new foot or ankle pain, swelling or a "sausage toe", this can be an early sign of psoriatic arthritis and is worth assessing — early diagnosis and treatment significantly improves long-term joint outcomes.

If you already have a psoriatic arthritis diagnosis and are experiencing new or worsening foot symptoms, we can help identify the specific structures involved and support your medical management with targeted podiatric care.

FAQs
Common questions
Can I have psoriatic arthritis without skin psoriasis?
Yes — in a minority of cases joint symptoms develop before any visible skin psoriasis, or skin involvement is very mild and unnoticed. Nail changes without obvious skin plaques can be an important clue and are worth mentioning to your GP or rheumatologist.
Why does my heel hurt so much with psoriatic arthritis?
Enthesitis — inflammation where the Achilles tendon or plantar fascia attaches to bone — is a hallmark feature of psoriatic arthritis and a very common cause of heel pain in this condition, distinct from mechanical plantar fasciitis, though the two can coexist.
Can podiatry replace my rheumatology medication?
No. Disease-modifying treatment prescribed by rheumatology is essential for controlling the underlying autoimmune process. Podiatry manages the mechanical and local foot consequences alongside this — the two work together, not as alternatives.
Is this covered by health insurance?
Podiatry consultations are typically covered by most major insurers. We work with Bupa, Aviva, WPA and others. See our Insurance page for full details.
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Ready to book your assessment? We'll assess how psoriatic arthritis is affecting your feet and build a plan to keep you comfortable and mobile.
Patient reviews
★★★★★ 5.0 on Google
“Will performed a miracle! I came with a longstanding tib post problem — I couldn't run for more than a couple of hours without my ankle swelling up. Through strengthening exercises and orthotics, Will got me to the start line of the 268 mile Spine Race and I finished in 11th place. I literally couldn't have done this without you.”
James
Google Review · Sports & Running