What Is Adult-Onset Still's Disease (AOSD)?
Adult-onset Still’s disease is a rare disease that is categorized as a systemic autoinflammatory condition. It is characterized by spiking fevers, arthralgia, or arthritis, and a rash that tends to disappear quickly or a short-duration rash, which is called evanescent rash in dermatology. This rare disease predominantly affects young women and has a prevalence ranging from one to 34 cases per million. What leads to the development of this rare disease is not very clear; however, in studies, cytomegalovirus infection and neutrophil extracellular traps have been linked to the development of this disease.
Cytomegalovirus (CMV) infection is caused by a common virus that can lead to flu-like symptoms. If the mother contracts it while pregnant, it can make the condition worse for those with compromised immune systems and complicate the birth of the child. The neutrophil extracellular traps are related to neutrophils. A neutrophil is a type of white blood cell that helps the body fight infections. When neutrophils detect harmful germs like bacteria, they can release a substance called neutrophil extracellular traps, or NETs. These NETs are like sticky webs made of DNA (deoxyribonucleic acid) and other proteins. They trap the microbes or germs, stopping them from spreading and helping the body get rid of them. Adult-onset Still’s disease has an impact on reproductive health, and some recent studies have shown that this rare disease affects pregnancy.
Can Someone Get Pregnant With Still's Disease?
Patients with adult-onset Still’s disease (AOSD) may experience exacerbation of the disease during pregnancy. According to a review of cases, pregnancies in women with AOSD can lead to complications such as relapse of symptoms, including fever, rash, and joint pain. However, corticosteroid therapy, when used during pregnancy, has been shown to be generally safe and effective in managing these exacerbations, potentially leading to better fetal outcomes. Despite occasional unfavorable outcomes such as spontaneous abortion, prematurity, and intrauterine growth restriction (IUGR), maternal morbidities are not common, and corticosteroid therapy seems to offer a satisfactory response. More long-term data are needed to better understand the management of AOSD during pregnancy.
What Are the Gynecological Manifestations of Adult Onset Still's Disease?
For women with AOSD, the gynecological aspects require particular attention, especially considering the potential impacts on menstrual regularity, fertility, and pregnancy outcomes. It is crucial for gynecologists to work closely with rheumatologists to manage these patients, particularly in optimizing therapeutic regimens that are safe and effective during conception and pregnancy. The symptoms are discussed in detail below.
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Menstrual Irregularities: Women with AOSD may experience changes in their menstrual cycles, including irregular or missed periods. This irregularity can be a direct result of systemic inflammation or a side effect of the medications used to treat the disease, such as corticosteroids.
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Fertility Issues: There is limited research on the direct impact of AOSD on fertility. However, chronic inflammation can potentially affect ovarian function and fertility indirectly. Moreover, medications used in AOSD management, particularly methotrexate, are contraindicated in pregnancy and can affect reproductive health.
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Pregnancy Complications: Pregnancy in women with AOSD requires careful management. The disease may worsen or relapse during pregnancy, and there is an increased risk of complications such as preterm labor and preeclampsia. Conversely, some women experience an amelioration of symptoms during pregnancy.
Non-Gynecological Manifestations: The other symptoms of this rare disease are discussed below.
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Rash: The characteristic rash associated with AOSD is typically a salmon-pink, maculopapular eruption that usually accompanies the fever spikes. There may be some pruritus or no pain associated with this condition, and it is most commonly found in the trunk and proximal extremities. The rash is often fleeting, appearing during fever peaks and disappearing as the fever subsides.
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Lymphadenopathy and Splenomegaly: Lymphadenopathy and splenomegaly are other key features observed in a significant number of patients. These symptoms reflect the systemic nature of the inflammation and can aid in the diagnosis when present alongside the characteristic triad of fever, rash, and arthritis.
How Does Adult Onset Still's Disease Diagnosed?
Since AOSD does not have a specific diagnostic test, it is primarily diagnosed clinically by recognizing a pattern of symptoms and excluding other diseases. This can be particularly challenging, as symptoms like fever, rash, and arthritis are common to many other conditions. To rule out infectious, neoplastic, and other rheumatologic diseases, a thorough evaluation, including a detailed history and physical exam, is essential.
What Are the Treatment Options of Adult Onset Still's Disease?
The management of AOSD aims to control symptoms and prevent long-term complications, such as chronic arthritis. The therapeutic approach should be tailored to the individual, taking into consideration the severity and extent of organ involvement. Treating AOSD during pregnancy poses unique challenges. While glucocorticoids remain a mainstay of treatment, their use is associated with an increased risk of complications like gestational diabetes and pre-term birth. Intravenous immunoglobulin (IVIG) and newer therapies like Anakinra offer potential alternatives, having shown promise in managing AOSD during pregnancy without serious complications. Treatment options include:
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Nonsteroidal Anti-Inflammatory Drugs (NSAIDs): Often the first line of treatment for managing pain and inflammation.
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Glucocorticoids: Used to control moderate to severe inflammation. It depends on the severity of the symptoms, whether these are administered orally or as pulse therapy.
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Disease-Modifying Antirheumatic Drugs (DMARDs): Methotrexate is commonly used, either alone or in combination with glucocorticoids, to reduce the need for long-term corticosteroid use.
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Biologic Therapies: For patients who do not respond to traditional DMARDs, biologic agents targeting specific inflammatory cytokines, such as interleukin-1 (IL-1), interleukin-6 (IL-6), and tumor necrosis factor-alpha (TNF-alpha), may be effective.
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Anarkinra: An anti-IL-1R drug, Anakinra (ANK), was recently approved for treating AOSD in the European Union.
Conclusion
In conclusion, while adult-onset Still’s diseases can increase the risk of pregnancy complications, effective disease management can lower these risks. Both rheumatologists and obstetricians should be aware of these potential complications and the importance of careful disease monitoring before and during pregnancy. Apart from this, women should be educated about this rare disease and its impact on menstrual cycle, fertility, and pregnancy. This will help manage the disease effectively.
