Infectious Arthritis

12 min read

Infectious arthritis, also known as septic arthritis, is a type of joint inflammation caused by an infection. It is a serious condition that can cause permanent joint damage if not treated promptly. Infectious arthritis can affect any joint in the body, but is most commonly seen in the knee, hip, and shoulder joints.

Causes of Infectious Arthritis

Infectious arthritis is caused by an infection in the joint. The most common cause is a bacterial infection, but it can also be caused by a virus, fungus, or parasite. Bacterial infections are usually caused by Staphylococcus aureus, Streptococcus, or Haemophilus influenzae. Viral infections are usually caused by the herpes virus, HIV, or hepatitis B. Fungal infections are usually caused by Candida albicans, and parasitic infections are usually caused by Giardia lamblia.

Risk Factors for Infectious Arthritis

Certain factors can increase the risk of developing infectious arthritis. These include having a weakened immune system, having a joint injury or surgery, having diabetes, or having a chronic illness such as rheumatoid arthritis. People who use intravenous drugs or have a history of intravenous drug use are also at an increased risk.

Diagnosis of Infectious Arthritis

Infectious arthritis is usually diagnosed based on a physical examination and a review of the patient’s medical history. Blood tests, joint fluid tests, and imaging tests such as X-rays or MRI scans may also be used to diagnose the condition.

Prevention of Infectious Arthritis

The best way to prevent infectious arthritis is to practice good hygiene and to avoid contact with people who are infected. It is also important to get vaccinated against certain infections, such as the flu, and to take antibiotics as prescribed by a doctor.

Take the Infectious Arthritis Assessment

Symptoms

Common Symptoms of Infectious Arthritis

  • Pain in the affected joint
  • Swelling in the affected joint
  • Redness in the affected joint
  • Warmth in the affected joint
  • Fever
  • Chills
  • Fatigue

Diagnosis and Treatment of Infectious Arthritis

If you experience any of the symptoms of infectious arthritis, it is important to seek medical attention as soon as possible. Your doctor will likely perform a physical exam and order tests such as blood tests, X-rays, and joint fluid tests to diagnose the condition. Treatment typically involves antibiotics to fight the infection, as well as anti-inflammatory medications to reduce pain and swelling. In some cases, surgery may be necessary to remove infected tissue or to repair damaged joints.

Causes

Bacterial Infections

Bacterial infections are the most common cause of infectious arthritis. Bacteria can enter the joint through a wound or cut, or through the bloodstream. Common bacteria that can cause infectious arthritis include Staphylococcus aureus, Streptococcus, and Mycobacterium tuberculosis. Other bacteria, such as those that cause Lyme disease, can also cause infectious arthritis.

Viral Infections

Viral infections can also cause infectious arthritis. Viruses such as the human immunodeficiency virus (HIV), hepatitis B and C, and cytomegalovirus can all cause joint inflammation. In some cases, the virus may remain dormant in the body for years before causing symptoms.

Fungal Infections

Fungal infections can also cause infectious arthritis. Fungi such as Candida albicans, Cryptococcus neoformans, and Histoplasma capsulatum can all cause joint inflammation. Fungal infections are more common in people with weakened immune systems.

Parasitic Infections

Parasitic infections can also cause infectious arthritis. Parasites such as Giardia lamblia, Entamoeba histolytica, and Toxoplasma gondii can all cause joint inflammation. These parasites are usually found in contaminated food or water.

Risk Factors

Certain factors can increase the risk of developing infectious arthritis. These include having a weakened immune system, having a history of joint trauma or surgery, and having a history of intravenous drug use. People who have recently traveled to areas where infectious diseases are common may also be at an increased risk.

Getting a Diagnosis

Diagnostic Tests

Diagnosis of infectious arthritis typically begins with a physical exam and a review of the patient’s medical history. The doctor may order blood tests to look for signs of infection, such as an elevated white blood cell count. X-rays may be taken to look for signs of joint damage. In some cases, a sample of joint fluid may be taken and tested for bacteria or other organisms.

Treatment

Treatment of infectious arthritis typically involves antibiotics to fight the infection. In some cases, surgery may be necessary to remove damaged tissue or to drain fluid from the joint. Physical therapy may also be recommended to help restore strength and range of motion.

Prevention

The best way to prevent infectious arthritis is to practice good hygiene and to avoid contact with people who have infections. It is also important to get prompt treatment for any infections that do occur.

Questions for Your Doctor

Medical History

Your doctor will want to know your medical history, including any recent illnesses, surgeries, or injuries. They will also want to know if you have any other medical conditions, such as diabetes or HIV. Your doctor may also ask about any recent travel, as some infections can be acquired from other countries.

Symptoms

Your doctor will want to know the symptoms you are experiencing. These may include pain, swelling, redness, warmth, and stiffness in the affected joint. You should also tell your doctor if you have any other symptoms, such as fever, chills, or fatigue.

Diagnostic Tests

Your doctor may order tests to help diagnose your condition. These may include blood tests, joint fluid tests, X-rays, or MRI scans. Your doctor may also take a sample of the affected joint fluid to test for the presence of bacteria, viruses, fungi, or parasites.

Treatment Options

Your doctor will discuss treatment options with you. These may include antibiotics, antiviral medications, antifungal medications, or anti-parasitic medications. Your doctor may also recommend physical therapy or other treatments to help reduce pain and swelling.

Follow-up Care

Your doctor will want to monitor your progress and may recommend follow-up visits. They may also recommend lifestyle changes, such as getting more rest or avoiding certain activities, to help reduce your risk of further infection.

Treatment

Antibiotics

Antibiotics are the most common treatment for bacterial infections that cause infectious arthritis. These medications work by killing the bacteria that are causing the infection. Depending on the type of bacteria, different antibiotics may be prescribed. Common antibiotics used to treat infectious arthritis include penicillin, cephalosporins, and macrolides.

Antiviral Medications

Antiviral medications are used to treat viral infections that cause infectious arthritis. These medications work by preventing the virus from replicating and spreading. Common antiviral medications used to treat infectious arthritis include acyclovir, famciclovir, and valacyclovir.

Antifungal Medications

Antifungal medications are used to treat fungal infections that cause infectious arthritis. These medications work by killing the fungus that is causing the infection. Common antifungal medications used to treat infectious arthritis include fluconazole, itraconazole, and terbinafine.

Antiparasitic Medications

Antiparasitic medications are used to treat parasitic infections that cause infectious arthritis. These medications work by killing the parasites that are causing the infection. Common antiparasitic medications used to treat infectious arthritis include albendazole, ivermectin, and praziquantel.

Surgery

In some cases, surgery may be necessary to remove the infected joint. This is usually done if the infection is severe and has not responded to other treatments. During the surgery, the infected joint is removed and replaced with an artificial joint. This procedure is known as joint replacement surgery.

Drugs & Medications

Antibiotics

Antibiotics are the most common treatment for bacterial infections that cause infectious arthritis. These medications work by killing the bacteria that are causing the infection. Common antibiotics used to treat infectious arthritis include penicillin, cephalosporins, and fluoroquinolones. Your doctor will determine the best antibiotic for your condition based on the type of bacteria causing the infection.

Antiviral Medications

Antiviral medications are used to treat viral infections that cause infectious arthritis. These medications work by preventing the virus from replicating and spreading throughout the body. Common antiviral medications used to treat infectious arthritis include acyclovir, valacyclovir, and famciclovir. Your doctor will determine the best antiviral medication for your condition based on the type of virus causing the infection.

Surgery

In some cases, surgery may be necessary to remove the infected joint. This is usually done if the infection is severe and has not responded to antibiotics or antiviral medications. During the surgery, the infected joint is removed and replaced with an artificial joint. This procedure is usually done under general anesthesia and can take several hours to complete.

Conclusion

Infectious arthritis is a type of joint inflammation caused by an infection. Treatment for infectious arthritis usually involves antibiotics or antiviral medications, depending on the type of infection. In some cases, surgery may be necessary to remove the infected joint. It is important to talk to your doctor about the best treatment option for your condition.

Diet

Foods to eat

The following foods may help reduce inflammation and support overall health when living with infectious arthritis:

  • Fruits and vegetables: Fruits and vegetables are rich in antioxidants, which can help reduce inflammation. Aim to eat a variety of colors, including dark leafy greens, red peppers, and blueberries.
  • Whole grains: Whole grains are a good source of fiber and other nutrients. Examples include oats, quinoa, and brown rice.
  • Fatty fish: Fatty fish, such as salmon, mackerel, and sardines, are rich in omega-3 fatty acids. These can help reduce inflammation.
  • Nuts and seeds: Nuts and seeds are a good source of healthy fats, fiber, and other nutrients. Examples include almonds, walnuts, and chia seeds.
  • Legumes: Legumes, such as beans, lentils, and peas, are a good source of fiber and other nutrients. They can also help reduce inflammation.
  • Herbs and spices: Herbs and spices, such as turmeric, ginger, and garlic, are rich in antioxidants and can help reduce inflammation.

Foods to avoid

The following foods may increase inflammation and should be avoided when living with infectious arthritis:

  • Processed foods: Processed foods, such as chips, crackers, and cookies, are high in sugar and unhealthy fats. These can increase inflammation.
  • Refined carbohydrates: Refined carbohydrates, such as white bread and pasta, are low in fiber and other nutrients. They can also increase inflammation.
  • Fried foods: Fried foods, such as French fries and fried chicken, are high in unhealthy fats. These can increase inflammation.
  • Sugary drinks: Sugary drinks, such as soda and fruit juice, are high in sugar and calories. These can increase inflammation.
  • Red meat: Red meat, such as beef and pork, is high in saturated fat. This can increase inflammation.
  • Alcohol: Alcohol can increase inflammation and should be avoided when living with infectious arthritis.

Takeaway

Infectious arthritis is a type of joint inflammation caused by an infection. Eating a healthy diet can help reduce inflammation and support overall health. Foods to include in the diet are fruits and vegetables, whole grains, fatty fish, nuts and seeds, legumes, herbs and spices. Foods to avoid are processed foods, refined carbohydrates, fried foods, sugary drinks, red meat, and alcohol.

Lifestyle

Get Vaccinated

One of the best ways to reduce your risk of developing infectious arthritis is to get vaccinated against the bacteria, viruses, and other organisms that can cause it. Vaccines are available for many of the most common causes of infectious arthritis, including hepatitis B, measles, mumps, rubella, and varicella. Talk to your doctor about which vaccines are right for you.

Practice Good Hygiene

Good hygiene is essential for preventing the spread of infectious diseases. Wash your hands often with soap and water, especially after using the bathroom, before eating, and after touching animals. Avoid sharing personal items such as towels, toothbrushes, and razors. If you have a cut or wound, keep it clean and covered with a bandage.

Eat a Healthy Diet

Eating a healthy diet can help boost your immune system and reduce your risk of developing infectious arthritis. Focus on eating plenty of fruits, vegetables, whole grains, and lean proteins. Avoid processed foods and sugary drinks, as these can weaken your immune system. Additionally, make sure to drink plenty of water to stay hydrated.

Exercise Regularly

Regular exercise can help strengthen your immune system and reduce your risk of developing infectious arthritis. Aim for at least 30 minutes of moderate-intensity physical activity most days of the week. This can include walking, jogging, swimming, or biking. If you’re new to exercise, start slowly and gradually increase your intensity and duration.

Get Enough Sleep

Getting enough sleep is essential for a strong immune system. Aim for 7-9 hours of sleep each night. If you have trouble sleeping, try to establish a regular sleep schedule and avoid caffeine and electronics before bed. Additionally, make sure your bedroom is dark, quiet, and comfortable.

See Your Doctor Regularly

Regular check-ups with your doctor can help identify any potential health issues early on. Make sure to keep up with your recommended screenings and immunizations. Additionally, if you experience any symptoms of infectious arthritis, such as joint pain, fever, or swelling, see your doctor right away.

Conclusion

Infectious arthritis is a serious condition that can be life-threatening if left untreated. Fortunately, there are lifestyle changes you can make to reduce your risk. These include getting vaccinated, practicing good hygiene, eating a healthy diet, exercising regularly, getting enough sleep, and seeing your doctor regularly. By following these tips, you can help protect yourself from infectious arthritis.