肺炎

1. Origins, structure, and basic meaning

• Structure: 肺炎 is read as はいえん and is a medical noun for pneumonia, an inflammatory disease of the lungs.
• Basic usage: Use 肺炎で入院する for the condition associated with hospitalization and 肺炎という病名 when identifying the disease name.

2. Common pitfalls and similar expressions

• Disease name and symptoms
  • 肺炎 is a diagnosis label, not the name of an individual symptom such as cough or fever.
• Examples are not clinical guidance
  • The contexts identify hospitalization in a story and a term in health material; the vocabulary note does not support diagnosing or treating a real person.