患部

1. Origins, structure, and basic meaning

• Structure: 患部 is read as かんぶ; 患 (affected by illness or injury) and 部 (part) form a noun for the affected area of the body.
• Basic usage: Use 患部の位置 for its location and 患部がいつから痛むか when asking when pain began.

2. Common pitfalls and similar expressions

• Contrast with 患者
  • 患者 is the person receiving care, whereas 患部 is the specific part of that person’s body affected by illness or injury.
• Contrast with 症状
  • 症状 is a condition such as pain or swelling; 患部 is the bodily location where such a symptom appears.