Alder's sign

Alder's sign, also known as Klein's sign,[1] is a medical sign used to differentiate between appendicitis and tubo-ovarian pathology.[2]

Alder's sign
Differential diagnosisAppendicitis, Tubo-ovarian pathology


  1. Shivananda, Prabhu (2011). Clinical Signs and Syndromes in Surgery. Jaypee Brothers Medical Publishers Pvt. Ltd. p. 13. ISBN 978-93-5025-838-5.
  2. Augustin, Goran (12 May 2014). Acute Abdomen During Pregnancy. Springer. pp. 8–. ISBN 978-3-319-05422-3.

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