What is rheumatoid arthritis? Causes, symptoms, and treatment options

What is rheumatoid arthritis? Causes, symptoms, and treatment options

27-10-2022
Rheumatology

Rheumatoid arthritis is a chronic systemic inflammatory disorder that primarily affects the synovial joints but may also involve multiple organ systems. The disease manifests with a range of clinical features that significantly impact physical function and daily activities. Early diagnosis and timely initiation of appropriate therapy are essential to slow disease progression, prevent irreversible joint damage, and minimize long-term disability and systemic complications.

What is rheumatoid arthritis?

Rheumatoid arthritis, also known as chronic inflammatory polyarthritis, is a chronic autoimmune disorder for which no definitive cure currently exists. The disease arises from immune dysregulation, in which the immune system mistakenly attacks the body’s own tissues, particularly the synovial lining of the joints.

Epidemiological data suggest that approximately 1 to 5 percent of adults may be affected. Rheumatoid arthritis most commonly develops between the ages of 20 and 40 and is more prevalent in women than in men, with a higher incidence observed in females of reproductive age.

As a chronic condition, rheumatoid arthritis cannot be completely cured. However, early diagnosis and timely initiation of disease modifying therapy are critical to preventing disease progression, minimizing joint destruction, and reducing long term functional impairment.

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The disease primarily targets the synovial membrane, leading to persistent inflammation, joint swelling, and pain. Without appropriate treatment, it may result in progressive cartilage damage, bone erosion, joint deformity, and significant limitations in daily activities.

Stages of rheumatoid arthritis

Like many chronic inflammatory conditions, rheumatoid arthritis progresses from mild to severe over time if left untreated. The disease typically evolves through four principal stages:

Stage 1: Early stage (initial phase)

This is the earliest phase of rheumatoid arthritis, often referred to as the onset stage. At this point, symptoms are typically mild and transient, making early recognition challenging. Patients may experience intermittent joint pain and stiffness. In some cases, subtle inflammatory signs such as swelling, warmth, and erythema around affected joints may be observed. Pathologically, synovial inflammation has already begun, with early changes occurring in the synovial membrane, although structural joint damage is usually not yet evident.

Rheumatoid arthritis causes joint pain, swelling, and inflammation of the affected joints.
Rheumatoid arthritis causes joint pain, swelling, and inflammation of the affected joints.

Stage 2

At this stage, the disease has progressed, and synovial inflammation becomes more pronounced. Structural damage to the articular cartilage may begin to develop, leading to more frequent and intense pain episodes, particularly during physical activity or weight bearing movements.

Stage 3

In this advanced stage, pain becomes more severe and significantly interferes with mobility and daily function. Joint damage extends beyond cartilage involvement, as progressive cartilage erosion allows adjacent bones to rub against one another, resulting in marked pain and mechanical dysfunction.

In many cases, it is only at this stage, when symptoms become debilitating, that patients seek medical evaluation.

Stage 4

This represents the most severe stage of rheumatoid arthritis. Patients may experience substantial loss of joint function, with movement becoming extremely painful. Persistent inflammation leads to swelling, stiffness, and joint deformity. In some cases, fibrous or bony ankylosis may occur, resulting in complete loss of joint mobility.

Causes of rheumatoid arthritis

Rheumatoid arthritis results from an autoimmune process in which the immune system mistakenly attacks the synovial membrane, the lining that surrounds the joints. This immune mediated response leads to synovial inflammation and thickening, which can progressively damage the articular cartilage and underlying bone. In addition, tendons and ligaments supporting the joints may become stretched and weakened over time, contributing to joint instability, loss of structural integrity, and eventual deformity.

The exact etiology of rheumatoid arthritis remains incompletely understood. However, genetic susceptibility is believed to play a significant role. Certain genes do not directly cause the disease but may increase an individual’s vulnerability to environmental triggers. For example, exposure to specific viral or bacterial infections may initiate the autoimmune response in genetically predisposed individuals, leading to disease onset.

Rheumatoid arthritis commonly affects small and medium sized joints, particularly the joints of the fingers.
Rheumatoid arthritis commonly affects small and medium sized joints, particularly the joints of the fingers.

Clinical manifestations of rheumatoid arthritis

Rheumatoid arthritis presents with a wide spectrum of symptoms, including systemic manifestations as well as articular and extra articular features. These include:

Clinical symptoms

Patients with rheumatoid arthritis may experience the following manifestations:

  • Joint pain and swelling, particularly involving small and medium sized joints. Pain is often persistent throughout the day, with increased severity at night and in the early morning, and may not improve with rest.
  • Morning stiffness, typically lasting for a prolonged duration and serving as a characteristic feature of inflammatory arthritis.
  • Generalized fatigue and malaise resulting from chronic systemic inflammation. During disease flares, some patients may also develop low grade fever.

Articular physical findings

At affected joints, inflammatory signs such as swelling, tenderness, and warmth are commonly observed. The joints most frequently involved include the wrists, metacarpophalangeal and proximal interphalangeal joints of the hands, elbows, shoulders, ankles, and knees.

If not diagnosed and treated promptly, progressive joint destruction may occur due to damage to cartilage, bone, tendons, and ligaments. This can lead to joint instability, deformity, subluxation or dislocation, and in severe cases, permanent functional disability.

Common joint deformities associated with rheumatoid arthritis include trigger finger, ulnar deviation of the hand often referred to as wind swept hand deformity, and carpal tunnel syndrome resulting from median nerve compression at the wrist.

Extra articular manifestations

Beyond joint involvement, rheumatoid arthritis may present with systemic complications affecting multiple organ systems, including:

  • Pulmonary involvement: Diffuse interstitial lung disease, rheumatoid nodules within the lung parenchyma, airway obstruction secondary to cricoarytenoid arthritis, pleuritis, and pleural effusion.
  • Ocular involvement: Keratoconjunctivitis sicca is common; in more advanced disease, scleritis may occur.
  • Cardiovascular involvement: Myocarditis, pericarditis, cardiac arrhythmias, and systemic vasculitis.
  • Subcutaneous rheumatoid nodules: Observed in approximately 10 to 15 percent of patients, typically located at pressure points such as the elbows, occipital region, or toes. These nodules are more frequently seen in patients with severe, progressive disease and seropositive rheumatoid arthritis.

Is rheumatoid arthritis dangerous? Common complications

Rheumatoid arthritis is a chronic, progressive autoimmune disease. If not diagnosed and treated early, it may lead to significant systemic complications, including:

  • Osteoporosis: Both the inflammatory disease process itself and certain medications used in treatment, particularly long term corticosteroids, can increase the risk of bone demineralization, resulting in fragile bones and a higher risk of fractures.
  • Infections: The disease and immunosuppressive therapies may compromise immune function, predisposing patients to an increased risk of infections.
  • Dry eyes and dry mouth: Patients are at increased risk of developing secondary Sjogren syndrome, characterized by reduced tear and saliva production.
  • Cardiovascular disease: Advanced rheumatoid arthritis is associated with an elevated risk of atherosclerosis, arterial obstruction, and pericardial inflammation, contributing to increased cardiovascular morbidity.
  • Lymphoma: Individuals with rheumatoid arthritis have a higher incidence of lymphoma, a group of malignancies affecting the lymphatic system.
  • Abnormal body composition: Patients may exhibit increased adiposity and reduced lean muscle mass, even when body mass index values are within the normal range, a phenomenon often referred to as rheumatoid cachexia.
  • Pulmonary disease: There is an increased risk of pulmonary inflammation and interstitial lung fibrosis, which may lead to progressive dyspnea and impaired respiratory function.

If not treated promptly, rheumatoid arthritis may lead to complications such as osteoporosis.

Diagnostic approach to rheumatoid arthritis

Rheumatoid arthritis may initially be suspected based on characteristic clinical manifestations. However, several symptoms can overlap with other musculoskeletal disorders, making differential diagnosis essential.

Therefore, appropriate laboratory investigations and imaging modalities are required to confirm the diagnosis, assess disease activity, and evaluate the extent of joint involvement with greater accuracy.

Imaging studies

Plain radiography, musculoskeletal ultrasound, and magnetic resonance imaging are valuable tools in the diagnosis of rheumatoid arthritis. Among these modalities, magnetic resonance imaging provides superior sensitivity due to its high resolution and detailed soft tissue visualization.

In addition to detecting cartilage damage and early bone erosion, magnetic resonance imaging enables assessment of joint effusion and synovial inflammation, facilitating early diagnosis before radiographic changes become apparent.

Laboratory investigations

Blood tests play a critical role in confirming the diagnosis and evaluating disease activity.

  • Complete blood count: This test helps assess the presence and severity of anemia, which may occur in patients with longstanding inflammatory disease.
  • Anti cyclic citrullinated peptide antibodies: Detection of anti cyclic citrullinated peptide antibodies is highly specific for rheumatoid arthritis. A positive result strongly supports the diagnosis, and elevated titers are associated with a more severe disease course and poorer prognosis.
  • Rheumatoid factor: Rheumatoid factor testing measures circulating immunoglobulins directed against the Fc portion of IgG. Elevated rheumatoid factor levels are associated with more aggressive disease. Approximately 50 to 75 percent of patients with rheumatoid arthritis have a positive rheumatoid factor result.
If not treated early, rheumatoid arthritis can lead to complications such as osteoporosis.
If not treated early, rheumatoid arthritis can lead to complications such as osteoporosis.

Management of rheumatoid arthritis

The treatment of rheumatoid arthritis is individualized, depending on disease severity, extent of joint damage, comorbidities, and overall health status. Common therapeutic strategies include:

Pharmacologic therapy

Following clinical evaluation, physicians may prescribe analgesics and anti-inflammatory agents to alleviate symptoms and control inflammation. In current clinical practice, disease modifying antirheumatic drugs and biologic agents are also commonly used to suppress immune mediated joint damage and prevent disease progression.

Surgical intervention

In advanced stages, when conservative management fails to provide adequate symptom control or when significant joint destruction has occurred, surgical treatment may be indicated. Joint replacement surgery involves removing the damaged joint surfaces and implanting a prosthetic joint to restore function and relieve pain.

Common sites for joint replacement in rheumatoid arthritis include the knee, hip, and femoral head.

Physical therapy and rehabilitation

Physical therapy plays a crucial role in comprehensive management. Structured exercise programs and therapeutic techniques help reduce pain, maintain joint mobility, prevent deformity, and improve overall musculoskeletal function. Rehabilitation also supports long term functional independence and enhances quality of life.

Early treatment is necessary to prevent serious complications.

In addition, physical therapy plays a crucial role in preventing complications such as muscle atrophy, joint ankylosis, and tendon contractures, thereby minimizing the overall impact of the disease on physical health and daily functioning.

Bị viêm khớp dạng thấp cần điều trị bệnh sớm để tránh biến chứng nguy hiểm
Early treatment is necessary to prevent serious complications.

At Hong Ngoc General Hospital, patients with rheumatoid arthritis are evaluated and managed by an experienced team of musculoskeletal specialists. Treatment strategies are individualized and may include advanced medical therapy, surgical intervention, or comprehensive rehabilitation programs, depending on disease severity and clinical indications.

Furthermore, the hospital’s clean, spacious, and patient centered environment enhances comfort and promotes a more positive treatment experience throughout the course of care.

Preventive measures for rheumatoid arthritis

Although rheumatoid arthritis cannot be completely prevented due to its autoimmune nature, certain measures may help reduce risk and support joint health. The following principles are recommended:

Weight management

Individuals who are overweight or obese have a higher risk of developing rheumatoid arthritis compared with those of normal body weight. Maintaining a healthy weight is therefore an important strategy in reducing disease risk and minimizing joint stress.

Adopting a balanced and nutritious diet is essential. It is advisable to limit excessive intake of saturated fats and red meat, while increasing consumption of vegetables, fruits, and whole grains. Reducing added sugars and excessive sodium intake also contributes to overall health and may help modulate systemic inflammation.

Regular physical activity not only supports weight control but also strengthens the musculoskeletal system. Consistent exercise enhances joint flexibility, improves muscle strength, and promotes overall joint health.

Smoking cessation

Scientific evidence indicates that cigarette smoking significantly increases the risk of developing rheumatoid arthritis and is associated with more severe disease progression. In addition, smoking adversely affects pulmonary and overall systemic health. Smoking cessation is therefore an essential step in protecting long term health and reducing inflammatory burden.

Limiting exposure to environmental pollutants

Chronic exposure to environmental pollutants may increase the risk of rheumatoid arthritis and other serious medical conditions. Particular attention should be paid to avoiding hazardous substances such as asbestos and silica, which have been associated with immune mediated and inflammatory disorders.

Regular health examinations

Even in the absence of symptoms, routine health checkups are recommended at least every six months. If any abnormal signs arise, prompt medical evaluation is advised.

Periodic health assessments allow early detection of underlying abnormalities and timely intervention, thereby preventing disease progression and reducing the risk of complications. Delayed treatment often leads to poorer outcomes and reduced likelihood of optimal disease control.

The above information provides an overview of rheumatoid arthritis and its preventive strategies. If joint pain or reduced mobility persists for more than three days, patients should seek evaluation at a reputable healthcare facility with a specialized musculoskeletal department for appropriate diagnosis and management.

Note: The information provided in this article by Hong Ngoc General Hospital is intended for reference purposes only and does not replace professional medical diagnosis or treatment. Patients should not self-medicate. For an accurate assessment of their medical condition, individuals are advised to visit a healthcare facility for direct clinical evaluation, diagnosis, and appropriate treatment planning by a qualified physician.

For more useful health information, please follow the official Fanpage of Hong Ngoc General Hospital:https://www.facebook.com/BenhvienHongNgoc

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