Merck Manual

Please confirm that you are not located inside the Russian Federation

honeypot link

Psoriatic Arthritis

By

The Manual's Editorial Staff

Reviewed/Revised Mar 2022 | Modified Sep 2022
VIEW PROFESSIONAL VERSION
Get the full details
Topic Resources

Arthritis is a group of diseases that makes your joints hurt, swell up, and turn red. There are many different types of arthritis.

What is psoriatic arthritis?

Psoriatic arthritis is a type of arthritis that affects some people with psoriasis. Psoriasis Psoriasis Psoriasis typically causes red bumps or patches covered with silvery, shiny scales. Psoriasis is a chronic (long-lasting) skin disease that causes raised, red patches on your skin. The raised... read more Psoriasis is a skin condition causing flare-ups of red, scaly rashes and thickened, pitted nails.

  • Psoriatic arthritis can affect any joint, but it usually develops in the spine, hands, and feet

  • Doctors look at your symptoms to tell if you have psoriatic arthritis

  • Medicines can sometimes help

What causes psoriatic arthritis?

Psoriatic arthritis happens when your body's immune system Overview of the Immune System The immune system is your body's defense system. It helps protect you from illness and infection. The immune system's job is to attack things that don’t belong in your body, including: Germs... read more (organs and cells that fight infection) attacks your joints and tissues around them. Doctors don’t know exactly why this happens.

You're more likely to get psoriatic arthritis if someone in your family has it.

What are the symptoms of psoriatic arthritis?

You may have one or more of the following:

Psoriasis Psoriasis Psoriasis typically causes red bumps or patches covered with silvery, shiny scales. Psoriasis is a chronic (long-lasting) skin disease that causes raised, red patches on your skin. The raised... read more Psoriasis causes a rash. The rash may appear before or after you have joint pain. You may not notice the rash if it's hidden in your scalp, navel, or creases of your skin. The skin and joint symptoms sometimes appear and disappear together, but often either the skin or the joint symptoms are worse than the other.

How can doctors tell if I have psoriatic arthritis?

Doctors can tell if you have psoriatic arthritis based on your symptoms and family history and by doing an exam. They will also do tests:

How do doctors treat psoriatic arthritis?

Doctors will prescribe medicines to control the rash and lessen the swelling in your joints. Medicines that can help psoriatic arthritis include:

When other treatments don't work, doctors may suggest surgery to replace a badly damaged joint with an artificial one.

Drugs Mentioned In This Article

Generic Name Select Brand Names
7T Gummy ES, Acephen, Aceta, Actamin, Adult Pain Relief, Anacin Aspirin Free, Aphen, Apra, Children's Acetaminophen, Children's Pain & Fever , Children's Pain Relief, Comtrex Sore Throat Relief, ED-APAP, ElixSure Fever/Pain, Feverall, Genapap, Genebs, Goody's Back & Body Pain, Infantaire, Infants' Acetaminophen, LIQUID PAIN RELIEF, Little Fevers, Little Remedies Infant Fever + Pain Reliever, Mapap, Mapap Arthritis Pain, Mapap Infants, Mapap Junior, M-PAP, Nortemp, Ofirmev, Pain & Fever , Pain and Fever , PAIN RELIEF , PAIN RELIEF Extra Strength, Panadol, PediaCare Children's Fever Reducer/Pain Reliever, PediaCare Children's Smooth Metls Fever Reducer/Pain Reliever, PediaCare Infant's Fever Reducer/Pain Reliever, Pediaphen, PHARBETOL, Plus PHARMA, Q-Pap, Q-Pap Extra Strength, Silapap, Triaminic Fever Reducer and Pain Reliever, Triaminic Infant Fever Reducer and Pain Reliever, Tylenol, Tylenol 8 Hour, Tylenol 8 Hour Arthritis Pain, Tylenol 8 Hour Muscle Aches & Pain, Tylenol Arthritis Pain, Tylenol Children's, Tylenol Children's Pain+Fever, Tylenol CrushableTablet, Tylenol Extra Strength, Tylenol Infants', Tylenol Infants Pain + Fever, Tylenol Junior Strength, Tylenol Pain + Fever, Tylenol Regular Strength, Tylenol Sore Throat, XS No Aspirin, XS Pain Reliever
NOTE: This is the Consumer Version. DOCTORS: VIEW PROFESSIONAL VERSION
VIEW PROFESSIONAL VERSION
quiz link

Test your knowledge

Take a Quiz!
iOS ANDROID
iOS ANDROID
iOS ANDROID
TOP