Polyarticular arthritisPPolyarticular arthritisPolyarticular arthritisEnglishRheumatologyChild (0-12 years);Teen (13-18 years)BodySkeletal systemConditions and diseasesAdult (19+)Joint or muscle pain;Pain2017-01-31T05:00:00ZJennifer Stinson RN-EC, PhD, CPNPLori Tucker, MDAdam Huber, MSc, MD, FRCPCLynn Spiegel, MD, FRCPCLaura Schanberg, MDPatrick McGrath, OC, PhD, FRSC7.0000000000000068.0000000000000438.000000000000Flat ContentHealth A-Z<p>This page describes polyarticular arthritis, which is the second most common type of arthritis in young people. Polyarticular arthritis affects five or more joints within the first six months of symptoms. This page talks about the two different types of polyarticular arthritis.</p><p>Polyarticular (pronounced: pah-lee-ar-tik-yoo-lur) arthritis affects five or more joints within the first six months of having JIA. It is the second most common type of JIA in children and teenagers. There are two types of polyarticular arthritis: The first type has a positive rheumatoid factor (RF) result on a blood test, and the second type has a negative RF result. RF is an antibody that is present in the blood in certain types of JIA.</p><h2>Key points</h2> <ul><li>Polyarticular arthritis is the second most common type of JIA.</li> <li>It affects five or more joints with the first six months of having JIA.</li> <li>There are two types of polyarticular arthritis: polyarticular-RF positive arthritis and polyarticular-RF negative arthritis.</li> <li>This type of JIA is more likely to last into adulthood.</li></ul>
PolyarthritePPolyarthritePolyarticular arthritisFrenchRheumatologyChild (0-12 years);Teen (13-18 years)BodySkeletal systemConditions and diseasesAdult (19+)Joint or muscle pain;Pain2017-01-31T05:00:00ZJennifer Stinson RN-EC, PhD, CPNPLori Tucker, MDAdam Huber, MSc, MD, FRCPCLynn Spiegel, MD, FRCPCLaura Schanberg, MDPatrick McGrath, OC, PhD, FRSC7.0000000000000068.00000000000000Flat ContentHealth A-Z<p>Cette page décrit la polyarthrite, qui arrive au deuxième rang des types d'arthrite les plus fréquents chez les jeunes. La polyarthrite touche cinq articulations ou plus au cours des six mois suivant l'apparition des symptômes.</p><h2>Qu’est-ce que la polyarthrite?</h2><p>La polyarthrite (prononcer : po-li-ar-trite) touche cinq articulations ou plus au cours des six mois suivant le diagnostic d’AIJ. Elle arrive au deuxième rang des types d’AIJ les plus fréquents. Il existe deux types de polyarthrite : </p><ul><li>celle avec facteur rhumatoïde (FR-positif) associé à la présence d’un anticorps de FR dans le sang</li><li>celle sans facteur rhumatoïde (FR-négatif), où il y a absence d’anticorps de FR dans le sang</li></ul><h2>À retenir</h2> <ul><li>La polyarthrite arrive au deuxième rang des types d’AIJ les plus fréquents chez les enfants et les adolescents.</li> <li>Elle touche cinq articulations ou plus au cours des six premiers mois.</li> <li>Il en existe deux formes : celle avec un facteur rhumatoïde (FR positive) et celle sans facteur rhumatoïde (FR négative).</li> <li>Ce type d’AIJ est plus susceptible de persister jusqu’à l’âge adulte.</li></ul>

 

 

Polyarticular arthritis1053.00000000000Polyarticular arthritisPolyarticular arthritisPEnglishRheumatologyChild (0-12 years);Teen (13-18 years)BodySkeletal systemConditions and diseasesAdult (19+)Joint or muscle pain;Pain2017-01-31T05:00:00ZJennifer Stinson RN-EC, PhD, CPNPLori Tucker, MDAdam Huber, MSc, MD, FRCPCLynn Spiegel, MD, FRCPCLaura Schanberg, MDPatrick McGrath, OC, PhD, FRSC7.0000000000000068.0000000000000438.000000000000Flat ContentHealth A-Z<p>This page describes polyarticular arthritis, which is the second most common type of arthritis in young people. Polyarticular arthritis affects five or more joints within the first six months of symptoms. This page talks about the two different types of polyarticular arthritis.</p><p>Polyarticular (pronounced: pah-lee-ar-tik-yoo-lur) arthritis affects five or more joints within the first six months of having JIA. It is the second most common type of JIA in children and teenagers. There are two types of polyarticular arthritis: The first type has a positive rheumatoid factor (RF) result on a blood test, and the second type has a negative RF result. RF is an antibody that is present in the blood in certain types of JIA.</p><h2>Key points</h2> <ul><li>Polyarticular arthritis is the second most common type of JIA.</li> <li>It affects five or more joints with the first six months of having JIA.</li> <li>There are two types of polyarticular arthritis: polyarticular-RF positive arthritis and polyarticular-RF negative arthritis.</li> <li>This type of JIA is more likely to last into adulthood.</li></ul><figure> <span class="asset-image-title">Polyarticular RF positive arthritis</span> <img src="https://assets.aboutkidshealth.ca/akhassets/arthritis_polyarticular_RFpos_MED_ILL_EN.jpg" alt="" /> <figcaption class="asset-image-caption">Polyarticular RF positive arthritis is more common in young people over 10 years of age. It is characterized by symmetric involvement of more joints, rheumatoid nodules (bumps under the skin), anemia, and fatigue.</figcaption> </figure> <h2>Quick facts about polyarticular - RF positive arthritis</h2><p>Here are some facts about RF positive polyarticular JIA:</p><ul><li>It affects 5% to 8% of young people with JIA.</li><li>It can occur at any age, but is more common in young people over 10 years of age.</li><li>It is more common in girls than boys.</li><li>It affects both the small joints of the hands and feet, and large joints like the knees, hips and ankles.</li><li>It affects joints on both sides of the body.</li><li>It is similar to one common adult type of JIA called rheumatoid arthritis.</li><li>There is a low risk of eye disease.</li><li>More severe inflammation may occur with this type of JIA.</li></ul><p>With this type of JIA, your child may also have other symptoms:</p><ul><li>Rheumatoid nodules, which are hard bumps under the skin.</li><li>Anemia, which is a low red blood cell count or reduced hemoglobin level in your blood.</li><li>Significant fatigue, which means you feel tired all day long.</li><li>A poor appetite, with some weight loss.</li><li>A low fever, which is less than 38.5 degrees Celcius (101.5 degrees Fahrenheit).</li><li>A general feeling of being unwell</li></ul><p>These symptoms occur when the disease is active and untreated. The symptoms will improve with proper treatment.</p> <figure> <img src="https://assets.aboutkidshealth.ca/akhassets/TeenSiteFilmstrip_PolyarticularPos_EN.jpg" alt="" /> </figure> <figure> <span class="asset-image-title">Polyarticular RF negative arthritis</span> <img src="https://assets.aboutkidshealth.ca/akhassets/arthritis_polyarticular_RFneg_MED_ILL_EN.jpg" alt="" /> <figcaption class="asset-image-caption">Polyarticular RF negative arthritis can occur at any age, more often in females than males. It usually starts in many joints at the same time, often symmetrically.</figcaption> </figure> <h2>Quick facts about RF-negative polyarticular arthritis</h2><p>Here are some facts about this type of JIA:</p><ul><li>It occurs in about 20% of young people who have JIA.</li><li>It can occur at any age.</li><li>It is more common in girls than boys.</li><li>It usually starts in many joints at the same time.</li><li>In some young people, it will start in only one or two joints and then spread to other joints during the first six months.</li></ul><p>Some young people only have polyarticular JIA for a limited period of time while others may have it for many years. This type of JIA is more likely to last into adulthood. In general, most young people with RF-negative polyarticular arthritis will require treatment with disease modifying anti-rheumatic drugs (DMARDs) to control the joint inflammation. If active disease is not well controlled, young people with this type of JIA can develop joint damage, disability or have problems with their growth.</p> <figure> <img src="https://assets.aboutkidshealth.ca/akhassets/TeenSiteFilmstrip_PolyarticularNeg_EN.jpg" alt="" /> </figure>https://assets.aboutkidshealth.ca/akhassets/arthritis_polyarticular_RFpos_MED_ILL_EN.jpgPolyarticular arthritis

Thank you to our sponsors

AboutKidsHealth is proud to partner with the following sponsors as they support our mission to improve the health and wellbeing of children in Canada and around the world by making accessible health care information available via the internet.