Systemic lupus erythematosus (SLE)
Hello, doctor.
I started experiencing hair loss (alopecia areata) and urticaria in May of this year.
I recalled that four years ago, I had a similar condition and underwent testing in the immunology department, where my anti-dsDNA level was 11.
The doctor mentioned it was ambiguous, and my health suddenly improved, so I did not continue follow-up.
This year, due to the recurrence of similar symptoms and also experiencing wheezing, I went for testing again.
My ANA was 1:1280; anti-dsDNA was 13; and C3 was 90.
The doctor said that although these indices suggest a high likelihood of systemic lupus erythematosus (SLE), since it hasn't reached 15, it cannot be definitively diagnosed, and no medication can be prescribed.
Is it necessary for the anti-dsDNA level to reach 15 to confirm a diagnosis of SLE? Will this index increase further? Additionally, I found online that there are medications related to this disease; can these be used preemptively to prevent this disease from causing other conditions? Thank you.
Min, 30~39 year old female. Ask Date: 2024/07/04
Dr. Gao Jiankai reply Internal Medicine
Hello, thank you for your question.
Here are my responses:
1.
ANA 1:1280; anti-dsDNA 13; C3 90.
The doctor mentioned that although these indices suggest a high likelihood of systemic lupus erythematosus (SLE), since it hasn't reached 15, it cannot be definitively diagnosed, and medication cannot be prescribed.
Is it necessary for the value to reach 15 to confirm SLE? Will these indices increase? --> Reference values can vary between hospitals, so it does not necessarily have to be 15.
Additionally, the diagnosis of lupus is not solely based on dsDNA; other indicators are also required.
These lupus-related indicators can fluctuate, and it is uncertain whether they will increase or decrease in the future.
2.
I found online that there are medications available for this disease.
Can we preemptively avoid complications from this disease? --> In principle, we only prescribe medication once the diagnostic criteria are met, and we do not use preventive medication.
However, if a patient has symptoms, some physicians may choose to start treatment even if the diagnostic criteria are not fully met, often opting for immunomodulators with lower side effects, such as quinine.
The Allergy, Immunology, and Rheumatology Department at Changhua Hospital, Ministry of Health and Welfare, is concerned about your well-being.
Reply Date: 2024/07/04
More Info
Understanding lupus, particularly systemic lupus erythematosus (SLE), involves recognizing its key symptoms, diagnostic criteria, and treatment options. Your situation, characterized by hair loss (alopecia), urticaria (hives), and respiratory symptoms, alongside your laboratory findings, suggests that you may be experiencing manifestations consistent with lupus.
Key Symptoms of Lupus
Lupus is a complex autoimmune disease that can affect multiple systems in the body. Common symptoms include:
1. Fatigue: Persistent tiredness that does not improve with rest.
2. Joint Pain: Often symmetrical, affecting multiple joints.
3. Skin Rashes: The classic "butterfly rash" across the cheeks and nose, as well as other rashes that may appear in sun-exposed areas.
4. Photosensitivity: Increased sensitivity to sunlight, leading to rashes or exacerbation of symptoms.
5. Alopecia: Hair loss, which can be patchy or diffuse.
6. Hematological Issues: Anemia, leukopenia, or thrombocytopenia.
7. Kidney Involvement: Proteinuria or signs of kidney dysfunction.
8. Neurological Symptoms: Seizures, psychosis, or cognitive dysfunction.
Given your symptoms and the laboratory findings of elevated ANA (1:1280) and anti-dsDNA (13), it is reasonable to suspect lupus. However, the diagnosis of SLE is not solely based on these antibodies but also on clinical criteria.
Diagnostic Criteria
The American College of Rheumatology (ACR) has established criteria for diagnosing lupus, which include:
- Malar rash
- Discoid rash
- Photosensitivity
- Oral ulcers
- Arthritis
- Serositis (pleuritis or pericarditis)
- Renal disorder (proteinuria or cellular casts)
- Neurological disorder (seizures or psychosis)
- Hematological disorder (hemolytic anemia, leukopenia, or thrombocytopenia)
- Immunological disorder (anti-dsDNA, anti-Smith, or antiphospholipid antibodies)
- Positive ANA
A diagnosis of SLE typically requires meeting at least four of these criteria, with at least one being clinical.
Treatment Options
The treatment of lupus is tailored to the individual and can vary based on the severity of symptoms and organ involvement. Common treatment options include:
1. Nonsteroidal Anti-Inflammatory Drugs (NSAIDs): For joint pain and inflammation.
2. Antimalarials: Hydroxychloroquine (Plaquenil) is commonly used to manage skin and joint symptoms.
3. Corticosteroids: For more severe flares, steroids can help reduce inflammation.
4. Immunosuppressants: Medications like azathioprine or mycophenolate mofetil may be used in cases of significant organ involvement.
5. Biologics: Newer therapies like belimumab (Benlysta) target specific pathways in the immune system.
Monitoring and Prevention
Your concern about whether the anti-dsDNA levels need to reach 15 for a diagnosis is understandable. The levels of these antibodies can fluctuate, and while higher levels may correlate with disease activity, they are not the sole determinants of diagnosis or treatment initiation. It is essential to have regular follow-ups with your rheumatologist to monitor your symptoms and laboratory results.
In terms of preventing complications associated with lupus, maintaining a healthy lifestyle, managing stress, and avoiding known triggers (like excessive sun exposure) are crucial. Early intervention with appropriate medications can help prevent disease flares and complications, such as kidney damage or cardiovascular issues.
Conclusion
In summary, while your laboratory findings and symptoms are suggestive of lupus, a definitive diagnosis requires a comprehensive evaluation by a healthcare professional, considering both clinical and laboratory criteria. Regular monitoring and a proactive approach to treatment can help manage symptoms and prevent complications. If you have further concerns or if your symptoms worsen, it is advisable to consult your healthcare provider promptly.
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