概述
兒童紅斑性狼瘡流行病學
兒童紅斑性狼瘡的臨床表現
疾病控制與治療
日常生活照顧建議
什麼時候要趕快回診或就醫？
持續高燒、嚴重疲倦
明顯水腫、尿量變少或顏色異常
呼吸困難、胸痛
嚴重頭痛、抽搐、意識改變
小結
五月十日思樂醫協會病友會 報名請按我
You Are My Little Butterfly: An Introduction to Childhood-Onset Systemic Lupus Erythematosus (cSLE)
Author: Chi-Teng Tseng, MD-MPH
May is not only a month to celebrate Mother’s Day but also World Lupus Awareness Month. This global initiative aims to improve public understanding of the disease and eliminate unnecessary misconceptions and stigma surrounding it.
Overview
Systemic Lupus Erythematosus (SLE) is an autoimmune disease. It is triggered by a complex interplay of various factors—including genetics, infections, and UV exposure—which causes the body to produce abnormal autoantibodies. These antibodies mistakenly attack the body's own healthy organs. In simpler terms, the immune system "loses its ability to distinguish friend from foe," leading to unintended self-attack.
In children, the clinical presentation of SLE is highly diverse, ranging from mild symptoms to severe, life-threatening conditions. Today, I would like to share some key insights regarding Childhood-Onset Systemic Lupus Erythematosus (cSLE).
Epidemiology of cSLE
Childhood-onset cases account for approximately 10% to 20% of all SLE patients. The average age of onset is 12 years, with a strong predominance in females.
Incidence: Recent epidemiological studies from China (2017–2021) report an overall incidence of 3.97 per 100,000 person-years among children aged 5–18.
Comparison: Local data from Taiwan shows that while the incidence in children is lower than in adults (3.97 vs. 10.81 per 100,000 person-years), cSLE often presents with greater severity than adult-onset SLE.
Severity: According to a large-scale U.S. study in 2008, adolescents with SLE are significantly more likely to experience renal (kidney) or neurological damage compared to their adult counterparts.
Clinical Manifestations: "The Great Imitator"
Lupus is often called "The Great Imitator" because its symptoms are so varied that they can easily be confused with other illnesses. Early symptoms in many children resemble a common cold or viral infection, making it easy to overlook. These "constitutional symptoms" include:
Recurrent fever
Weight loss
Chronic fatigue
Poor appetite
Furthermore, as the immune system attacks different tissues and organs, specific symptoms may arise:
Malar Rash (Butterfly Rash): Seen in about one-third of children, this is a distinct red rash across the cheeks and bridge of the nose (sparing the nasolabial folds), resembling a butterfly resting on the face.
Non-scarring Alopecia: Hair loss that typically recovers once the disease is controlled.
Painless Oral Ulcers: Usually occurring on the hard palate; because they are often painless, they are frequently missed.
Lower Extremity Edema: Often resulting from Lupus Nephritis (kidney inflammation) and proteinuria, which disrupts the body’s fluid balance.
Arthritis: Joint pain and swelling.
Hematological Issues: Immune-mediated attacks on red blood cells can lead to Hemolytic Anemia, causing severe paleness and fatigue.
Neuropsychiatric Symptoms: If the central nervous system is affected, symptoms range from headaches and mood changes to seizures in severe cases.
Cardiopulmonary Involvement: Patients may develop pericarditis (fluid around the heart), pleurisy (fluid in the lungs), lupus pneumonitis, or pulmonary hemorrhage.
Lymphadenopathy: Swollen lymph nodes in the neck, armpits, or groin.
Disease Management and Treatment
The primary goals of treating SLE are:
Preventing organ damage: Suppressing the immune system to avoid irreversible harm to vital tissues.
Minimizing treatment side effects: Reducing the long-term impact of steroids and immunosuppressants.
Common Medications:
Corticosteroids (e.g., Prednisolone): To rapidly reduce systemic inflammation.
Immunomodulators/Immunosuppressants: Such as Hydroxychloroquine (Plaquenil), Cyclosporine, or Mycophenolate Mofetil (Cellcept).
Biologics: Modern breakthroughs like Belimumab (Benlysta) or Rituximab (MabThera) can effectively control the disease while allowing for a lower maintenance dose of steroids.
Note: Treatment plans must be tailored by a physician. Parents and patients must strictly adhere to the prescribed regimen and never adjust or stop medication independently.
Daily Care and Lifestyle Recommendations
UV Protection: cSLE patients are highly photosensitive. Use high-SPF sunscreen, wear hats, and choose long-sleeved clothing when outdoors.
Regular Routine: Ensure adequate rest, a stable sleep schedule, and moderate exercise. Avoid staying up late.
Balanced Nutrition: A diet rich in vegetables, fruits, and high-quality protein. Limit fried and overly salty foods. Consider omega-3 (fish oil) supplementation.
Infection Prevention: Avoid crowded places and maintain strict hand hygiene.
Regular Follow-ups: Consistent blood and urine tests are vital to monitor blood pressure and organ function.
Calcium and Vitamin D: Essential for bone health, especially for those on long-term steroid therapy.
Smoking Cessation: Crucial for adolescent patients to avoid further vascular complications.
Vaccination Precautions: Avoid live-attenuated vaccines, especially if taking more than 10mg/day of Prednisolone or other immunosuppressants.
When to Seek Urgent Medical Attention?
Please contact your medical team immediately if your child experiences:
Persistent high fever or extreme exhaustion.
Significant swelling (edema), decreased urine output, or abnormal urine color.
Shortness of breath or chest pain.
Severe headache, seizures, or altered consciousness.
Summary
With advancements in modern medicine, our ability to diagnose and care for children with SLE has improved significantly. After so many years, I still remember those patients I encountered during my fellowship at Linkou Chang Gung Memorial Hospital that the have managed their condition so well. They lead lives indistinguishable from their peers. With stable disease control, dreams of marriage, career advancement, and starting a family are entirely achievable.
We are here to support our "Little Butterfly" patients and their families. If you have any concerns, please consult the pediatric rheumatology team at Chang Gung Memorial Hospital.
