What is Pso?

Psoriasis [pronounced sorr-eye-iss-iss], also called Pso, is a chronic, or ongoing, disease that can appear anywhere on the body. Psoriasis most commonly affects the skin, but can also affect the nails. If you also have swollen, stiff or painful joints, you may have a form of inflammatory arthritis called psoriatic arthritis [pronounced sorr-eye-att-ick arth-rye-tiss] that can affect people with psoriasis.

In Pso, skin cells are replaced every 4-7 days, instead of the usual 21-28 days

In Pso, the body’s immune system gets ‘confused’ and attacks itself, making new skin cells grow and build up above and just below the surface of the skin. This creates thick red or swollen patches of skin covered in silvery scales called ‘plaques’ that you may recognise. These patches can become inflamed, itchy and bleed, affecting either small or large areas of skin, but it’s important to remember that Pso isn’t contagious.

diagram

How psoriasis works

Pso affects at least 100 million people around the world

Moderate to severe Pso increases the risk of heart disease and stroke. Psoriasis is also associated with diabetes, obesity, high blood pressure, inflammatory bowel disease, and there is a small increased risk of skin cancer.

You may be interested in

Lady staring out of window
How to prepare to see your doctor

Make every moment of the consultation really count.

FAQs icons
FAQs

Get quick answers to the most common questions about psoriasis.

Doctor inspecting
How can you be certain it's Pso?

Find out which doctors and tests you’ll encounter.

CP-308719. May 2024

References

Tohid H, et al. Skin Pharmacol Physiol 2016;29:220–30.
National Psoriasis Foundation. Tips for better sleep with psoriatic disease. Available at: www.psoriasis.org/advance/tips-for-better-sleep-with-psoriatic-disease Accessed June 2020.
Rapp SR, et al. J Am Acad Dermatol 1999;41:401–7.
Pompili M, et al. J Int Med Res 2016;44(1 suppl):61–6.
World Health Organization. Global report on psoriasis. 2016. Available at: apps.who.int/iris/bitstream/10665/204417/1/9789241565189_eng.pdf. Accessed June 2020.
PAPAA. Emollients and psoriasis. Available at: www.papaa.org/learn-about-psoriasis-and-psoriatic-arthritis/further-information/emollients-and-psoriasis/ Accessed: June 2020.
AAD. How long will I have to treat my psoriasis? Available at: www.aad.org/public/diseases/psoriasis/treatment/medications/how-long Accessed: June 2020.
Rendon A and Schäkel K. Int J Mol Sci. 2019 Mar; 20(6): 1475.
Bagel J, Schwartzman S. Am J Clin Dermatol 2018;19:839-852.
National Psoriasis Foundation. About psoriatic arthritis. Available at: www.psoriasis.org/about-psoriatic-arthritis Accessed: June 2020.
PAPAA. Psoriasis: a simple explanation. Available at: www.papaa.org/learn-about-psoriasis-and-psoriatic-arthritis/common-questions/psoriasis-a-simple-explanation/ Accessed: June 2020.
National Psoriasis Foundation. About psoriasis. Available at: www.psoriasis.org/about-psoriasis. Accessed June 2020.
Globe D, et al. Health and Quality of Life Outcomes 2009,7:62.
NHS. Psoriasis overview. Available at: www.nhs.uk/conditions/psoriasis/ Accessed: June 2020.
DermNet. Guidelines for the teratment of psoriasis. Available at: dermnetnz.org/topics/guidelines-for-the-treatment-of-psoriasis/ Accessed: July 2020.
NHS. Living with psoriasis. Available at: www.nhs.uk/conditions/psoriasis/living-with/ Accessed: June 2020.
Logo Janssen | Pharmaceutical Companies of Johnson & Johnson