Autoimmune disease

Disease Description (Causes and Symptoms)

• Brief definition: Autoimmune diseases are a group of inflammatory diseases in which abnormalities of the immune system cause it to target the body’s own tissues. They may be systemic (e.g., systemic lupus erythematosus) or organ-specific (e.g., autoimmune thyroiditis, type 1 diabetes).
• Causes/pathophysiology: The exact cause is unknown, but genetic predisposition, hormonal influences, and environmental factors (such as infections, medications, and stress) interact to disrupt immune tolerance to self-antigens, allowing autoantibodies and autoreactive T cells to damage tissues.
• Common symptoms: Chronic fatigue, low-grade fever, hair loss, skin lesions, eye symptoms, sleep disturbances, joint and muscle pain, changes in weight and appetite, depression and declining memory, abnormal sensations, indigestion, and others. Symptoms vary greatly depending on the organs involved.
• Epidemiology (summary): These diseases are more common in women (women are affected approximately four times as often), frequently develop between the ages of 20 and 50, and in some regions (Europe and North America), approximately 5% of the population is known to have a disease in this group.

Treatment Methods and Precautions

• Standard treatment principles: Depending on the type and severity of the disease, treatment aims to control symptoms, preserve function, and suppress immune mechanisms.
• Medication:
  • Acute or severe inflammation: Glucocorticoids (steroids)
  • Pain and mild inflammation: Nonsteroidal anti-inflammatory drugs (NSAIDs)
  • Immunosuppressants: Azathioprine, methotrexate, cyclophosphamide, etc. (medication selection varies by disease)
  • Biologics: Anti-TNF agents, anti-IL agents, B-cell targeted therapies, etc. (used for specific diseases)
  • Symptomatic treatment: Pain relievers, antidepressants, gastrointestinal treatment, etc.
• Procedures/surgery: May be considered individually when organ damage is severe (e.g., joint replacement, liver transplantation).
• Lifestyle management: Regular sleep and proper nutrition, avoiding overwork and excessive stress, sun protection (especially for photosensitive diseases such as lupus), adequate fluid intake, no smoking, and vaccination (consult the treating physician when immunosuppressed).
• Pregnancy and fertility management: Because some autoimmune diseases and medications can affect pregnancy, consult a specialist regarding family planning and medication adjustments before, during, and after pregnancy.
• Precautions (including the risk of complications): Increased risk of infection due to long-term immunosuppression; osteoporosis and metabolic abnormalities (with long-term steroid use); increased cardiovascular risk (due to chronic inflammation); and possible damage to the function of organs such as the kidneys, liver, lungs, and central nervous system. Medication side effects and infection risk should be evaluated periodically.

Checklist Before an Outpatient Visit (Including Items to Prepare, Medical History Organization, and Example Questions)

• Items to bring/things to record:
  • A list of all medications currently being taken (including prescription drugs, over-the-counter medications, and supplements), along with dosage and dosing times
  • Past medical and surgical history, and family history (autoimmune diseases or frequently occurring illnesses)
  • Recent blood test and imaging results (copies, if available)
  • A symptom diary recording when symptoms began, their progression, factors that worsen or improve them, and their impact on daily life (fatigue level, sleep, exercise capacity, etc.)
  • Pregnancy plans/breastfeeding status (if applicable)
  • Recent history of infections and vaccination history
• Items useful to check at the outpatient visit (materials to show the doctor): Recent weight changes, fever patterns, photographs of rashes (if available), and records of adverse reactions caused by medications
• Before the visit: If you are receiving immunosuppressive treatment, bringing recent blood test results (including white blood cell count and liver and kidney function) can help with establishing a diagnosis and treatment plan.

Examples of General Questions to Ask the Doctor

• "What is the basis for the exact diagnosis of this disease? (Symptoms, test results, imaging, etc.)"
• "What treatment options do you recommend, and what are the goals and expected side effects of each treatment?"
• "If I need to take immunosuppressants, what will the infection prevention and monitoring plan be?"
• "What is the long-term prognosis of this disease, and what should I be careful about in daily life?"
• "If I am planning a pregnancy, which medications should I stop or switch to?"

Examples of Disease-Specific Questions

• Regarding autoantibody testing: "How are the results of the autoantibodies tested (e.g., ANA, anti-dsDNA, RF, anti-CCP, etc.) related to my current symptoms? What additional tests do you recommend?"
• Regarding treatment decisions: "Based on my current symptoms and test results, do I need immunosuppressive treatment or the introduction of biologics? If so, what are the expected benefits and the plan for monitoring complications?"

Note: This information is a summary based on general medical knowledge, and the diagnosis and treatment of individual patients may vary depending on the evaluation by the treating specialist.