Patients with reactive arthritis typically present with a combination of symptoms that may include:

• Joint Pain and Swelling: Often affecting the knees, ankles, and feet.
• Eye Inflammation: Such as conjunctivitis or uveitis, leading to redness and irritation.
• Urinary Problems: Including pain during urination or increased frequency.
• Skin Rashes: Particularly on the palms and soles, or sores in the mouth.
• Enthesitis: Inflammation where tendons attach to bones, commonly at the heel.

Symptoms usually appear within 1 to 4 weeks after the initial infection.

Diagnosing reactive arthritis involves a combination of clinical evaluation and laboratory tests:

• Medical History and Physical Exam: To assess symptoms and recent infections.
• Blood Tests: To check for markers of inflammation and rule out other conditions.
• Joint Fluid Analysis: To exclude other types of arthritis.
• Imaging Studies: Such as X-rays, to assess joint damage.
• Infection Screening: Tests for recent bacterial infections, particularly in the gastrointestinal or genitourinary tracts.

Treatment for reactive arthritis focuses on managing symptoms and treating any underlying infections:

• Nonsteroidal Anti-Inflammatory Drugs (NSAIDs): To reduce pain and inflammation.
• Corticosteroids: For severe inflammation, either orally or as injections into the affected joints.
• Antibiotics: If a bacterial infection is still present.
• Disease-Modifying Antirheumatic Drugs (DMARDs): For persistent or severe cases.
• Physical Therapy: To maintain joint function and mobility.

The prognosis for reactive arthritis varies. Many patients experience improvement within a few months, but some may have recurrent episodes or develop chronic arthritis. Early treatment can help manage symptoms and improve outcomes.

Reactive arthritis is triggered by an infection, most commonly by bacteria such as Chlamydia trachomatis, Salmonella, Shigella, Yersinia, or Campylobacter. The exact mechanism is not fully understood, but it is believed that the immune system mistakenly attacks the joints and other tissues after fighting off the infection.

Reactive arthritis is relatively uncommon, affecting young adults more frequently than other age groups. It is more prevalent in men than women, particularly following genitourinary infections. The presence of the HLA-B27 gene increases susceptibility to the condition.

The pathophysiology of reactive arthritis involves an abnormal immune response. After an infection, the immune system may continue to attack the body's own tissues, particularly in the joints, leading to inflammation and the symptoms associated with the condition. The role of genetic factors, such as the HLA-B27 gene, is significant in predisposing individuals to this immune response.

Preventing reactive arthritis involves reducing the risk of the infections that can trigger it:

• Safe Sexual Practices: To prevent sexually transmitted infections.
• Food Safety: Proper handling and cooking of food to avoid gastrointestinal infections.
• Hygiene: Regular handwashing to prevent the spread of bacteria.

Reactive arthritis is an inflammatory condition that arises after certain infections. It primarily affects the joints but can also involve the eyes, skin, and urinary tract. Diagnosis involves clinical evaluation and tests to rule out other conditions. Treatment focuses on symptom management and addressing any underlying infections. While many patients recover fully, some may experience chronic symptoms.

If you suspect you have reactive arthritis, it is important to discuss your symptoms and medical history with your healthcare provider. They will conduct a thorough evaluation and may order tests to confirm the diagnosis. Treatment will be tailored to your specific symptoms and may include medications to reduce inflammation and pain, as well as antibiotics if an infection is present. Maintaining a healthy lifestyle and following your doctor's recommendations can help manage the condition effectively.