Kernig Sign Test

Diagnosing meningitis typically involves a combination of clinical signs and medical tests. Clinicians look for symptoms such as a severe headache, stiff neck, fever, confusion, and sensitivity to light. Kernig and Brudzinski's signs are also commonly used to help diagnose meningitis. In addition, a lumbar puncture (spinal tap) may be performed to collect cerebrospinal fluid for testing.

A positive Kernig sign is indicated when a patient is unable to extend their knees beyond 135 degrees. This suggests meningeal irritation.

The Kernig Sign Test alone cannot diagnose meningitis. It is a clinical sign that suggests meningeal irritation, warranting further diagnostic testing such as lumbar puncture and imaging to confirm meningitis.