Brudzinski’s sign is a feature of:

Correct option is A

Brudzinski’s sign is a classical clinical sign indicative of meningeal irritation, commonly seen in meningitis. When the patient’s neck is passively flexed, there is an involuntary flexion of the hips and knees. This reflex occurs due to inflammation of the meninges, which increases sensitivity and causes protective muscle responses. It is often assessed alongside Kernig’s sign for confirming meningeal involvement.
Explanation of options: (a) Meningitis – This is the correct answer. Brudzinski’s sign is a hallmark of meningeal irritation found in bacterial or viral meningitis. (b) Seizures – These involve abnormal neuronal activity, not associated with Brudzinski’s sign. (c) Cerebrovascular accident – This is a stroke, and while it may affect consciousness or mobility, it does not show Brudzinski’s sign. (d) Endocarditis – This is an infection of the inner lining of the heart and valves; it may cause embolic complications but not meningeal signs.