Kehr's sign indicates referred pain to which area?

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Multiple Choice

Kehr's sign indicates referred pain to which area?

Explanation:
Kehr's sign is felt as shoulder pain when the diaphragm is irritated by blood or other material in the peritoneal cavity (often from splenic injury). The phrenic nerve, which senses the diaphragm (C3–5), refers those signals to the shoulder region, so the pain is perceived there rather than in the abdomen, chest, or back. This is why the shoulder is the correct answer, typically the left shoulder due to left‑sided diaphragmatic irritation.

Kehr's sign is felt as shoulder pain when the diaphragm is irritated by blood or other material in the peritoneal cavity (often from splenic injury). The phrenic nerve, which senses the diaphragm (C3–5), refers those signals to the shoulder region, so the pain is perceived there rather than in the abdomen, chest, or back. This is why the shoulder is the correct answer, typically the left shoulder due to left‑sided diaphragmatic irritation.

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