黄疸

1. Origins, structure, and basic meaning

• Structure: 黄疸, read おうだん, is the medical noun jaundice.
• Basic usage: 黄疸の特徴 introduces its clinical features; 黄疸がないか観察する checks whether a patient shows it.

2. Common pitfalls and similar expressions

• Describing features and checking presence
  • の特徴 concerns characteristics of jaundice, whereas がないか tests for its presence; the term is not a general color adjective.