医師

1. Origins, structure, and basic meaning

• Structure: 医師(いし) refers to a physician who examines and treats illness.
• Basic usage: It describes consulting a doctor because symptoms persisted.
  • 症状が続くので医師に相談した。

2. Common pitfalls and similar expressions

• Professional title and everyday wording
  • 医師 suits documents or descriptions of someone's profession. 医者(いしゃ) is also used in everyday speech, and 先生(せんせい) is often used when addressing a doctor directly.