Social anxiety disorder

Disease Description (Causes and Symptoms)

• Definition: Community-acquired pneumonia is an infection of the lungs acquired during daily life, in which inflammation and exudate develop in the alveoli and bronchi, impairing gas exchange. It is distinguished from hospital-acquired pneumonia that occurs in hospitals or nursing homes.
• Causes: The most common pathogen is Streptococcus pneumoniae (pneumococcus), while Haemophilus influenzae, Moraxella catarrhalis, Mycoplasma pneumoniae (in younger people), viruses (including influenza), and others may be responsible depending on age and underlying diseases.
• Pathophysiology summary: Pathogens enter the alveoli through the airways or aspiration → inflammatory cells and exudate fill the alveoli, causing impaired air exchange and infiltrates (opacities) → symptoms such as fever, cough, sputum, chest pain, and shortness of breath develop.
• Main symptoms: Fever, chills, cough (with sputum), chest pain (pleuritic chest pain), shortness of breath, general malaise, and weakness. Older adults may present with changes in consciousness or lethargy without fever.

Treatment

• General principles: Depending on severity (CURB‑65, PSI, etc.), a decision is made between outpatient treatment and hospitalization or intensive care treatment. When the cause is unknown, prompt treatment is started with empirical antibiotics.
• Empirical antibiotics (general recommended examples; follow local guidelines):
  • Outpatient (no underlying disease or recent antibiotic use, and low severity): A macrolide (e.g., azithromycin) or doxycycline.
  • Outpatient (underlying disease or recent antibiotic use): A respiratory beta-lactam (such as amoxicillin/clavulanate) + a macrolide, or a respiratory fluoroquinolone alone (considering local resistance and contraindications).
  • Inpatient (general ward): IV beta-lactam + a macrolide, or a respiratory fluoroquinolone alone.
  • Severe/ICU: A broad-spectrum IV antibiotic combination (beta-lactam + macrolide or fluoroquinolone), with adjustment of antibiotics when necessary (based on culture results).
• Treatment duration: At least 5 days (usually 5–7 days) is recommended after clinical stabilization (resolution of fever, improvement in shortness of breath, normalization of pulse and blood pressure, recovery of oxygen saturation, etc.), but 7–10 days or longer may be necessary depending on the pathogen and clinical course.
• Supportive therapy: Oxygen therapy (in cases of hypoxia), fluid and electrolyte replacement, antipyretics and analgesics, and physical therapy for aspiration and mucus clearance (respiratory rehabilitation). Bronchodilators may be used when necessary. In cases of severe complications, aspiration drainage, chest drainage (for empyema), or mechanical ventilation may be necessary.
• Lifestyle management and precautions:
  • Take all prescribed antibiotics for the full prescribed duration and as directed. Do not stop taking them after symptoms improve.
  • Get sufficient rest and drink plenty of fluids; do not smoke.
  • Visit a medical institution immediately if shortness of breath, chest pain, impaired consciousness, or persistent high fever occurs.
• Risk of complications: Sepsis and shock, lung abscess and empyema (including aspiration-related cases), bronchopulmonary complications, reduced lung function, and pneumothorax. Mortality and complication rates increase in older adults and people with underlying diseases.

Outpatient Visit Checkpoints (Items to Prepare and Example Questions)

• Items to prepare:
  • A list of currently taken medications (including antibiotics, anticoagulants, and steroids) and a history of medication allergies
  • Past medical history (chronic respiratory disease, heart disease, diabetes, immunocompromised conditions, etc.)
  • Recent test and imaging results (if available, chest X-ray/CT and blood test results)
  • The onset and course of symptoms (the date fever began, the color and amount of cough and sputum, and when shortness of breath worsened)
  • Smoking and alcohol use history, recent hospitalization or residence in a nursing home, and travel or exposure history (such as contact with someone with influenza)
  • Body temperature and oxygen saturation measured at home (if available)
• Information to tell the doctor in advance during the outpatient visit (examples):
  • Whether you have recently taken antibiotics
  • Whether you have any medication allergies
  • The severity of your shortness of breath (during activity or at rest) and whether you have exertional shortness of breath

General Example Questions to Ask the Doctor

• What do you think is causing my pneumonia (bacteria/virus/other)? Can it be confirmed through testing?
• Which antibiotic should I take, and for how long? What are the side effects?
• How is the need for hospitalization determined? Is it safe for me to be treated at home?
• Should I go to the emergency room immediately if my shortness of breath or high fever becomes severe? Which symptoms indicate an emergency?
• When can I return to daily activities (exercise and work) after recovering from pneumonia?

Examples of Personalized Questions by Disease

• How was the severity of my pneumonia assessed (CURB‑65/PSI results)? Please tell me whether hospitalization or intensive care treatment is necessary.
• If the causative organism is identified through culture or a urinary antigen test, how will the antibiotics be changed?