We are using cookies to give you the best experience on our site. Cookies are files stored in your browser and are used by most websites to help personalise your web experience.

By continuing to use our website without changing the settings, you are agreeing to our use of cookies.

Find out more
You are here:
> > > > > How is psoriatic arthritis diagnosed?

How is psoriatic arthritis diagnosed?

It's important that psoriatic arthritis is diagnosed early so treatment can be started as soon as possible.

There's no specific test for psoriatic arthritis, but the diagnosis is based on your symptoms and a physical examination. Your doctor will check for psoriasis and may ask if there's a history of psoriasis or psoriatic arthritis in your family.

People with psoriasis may be regularly asked about joint symptoms by their GP and/or dermatologist.

If several joints are affected, your doctor will consider features such as the pattern of arthritis – that is, which joints are affected.

It can be difficult to tell the difference between psoriatic arthritis and rheumatoid arthritis, but blood tests such as those for rheumatoid factor and anti-CCP antibody can help.

Psoriatic arthritis can have similar symptoms to gout, so x-rays of your back, hands and feet may also be helpful, as psoriatic arthritis can affect the bones and joints in these areas in a different way to other conditions.

Other types of imaging, such as MRI and ultrasound scans, may help to confirm the diagnosis.

The National Institute for Health and Care Excellence (NICE) published new quality standards in 2013 to help improve the care of people across England with psoriasis.

The standards are mainly aimed at GPs and state that people with psoriasis should be offered an appointment every year to check for signs of psoriatic arthritis and every five years to check their cardiovascular health. This should help in diagnosing psoriatic arthritis as early as possible and making sure that the right treatment is started.


0800 5200 520

Our new helpline: Call us for free information, help and advice on your type of arthritis. Open Mon–Fri 9am–8pm.

All calls are recorded for training and quality purposes

Virtual Assistant

Our new Arthritis Virtual Assistant uses artificial intelligence to answer your arthritis related questions 24/7.

Ask a question
For more information, go to
Arthritis Research UK fund research into the cause, treatment and cure of arthritis. You can support Arthritis Research UK by volunteering, donating or visiting our shops.