Following a lumbar puncture, a patient reports a sudden, severe headache that worsens when sitting upright and improves when lying flat. Which finding requires immediate notification of the healthcare provider?

✓ Correct Answer: Option D

Headache is common post-lumbar puncture. However, fever and nuchal rigidity (stiff neck) are signs of meningitis, a serious complication requiring immediate medical evaluation and intervention. Numbness/tingling would be ipsilateral, not contralateral.