Which of the following statements about encephalitis is true?
Encephalitis is caused exclusively by bacterial infections.
Encephalitis is an inflammatory condition of the brain.
The primary symptom of encephalitis is muscle pain.
Encephalitis is always a mild condition that resolves without treatment.
The Correct Answer is B
A. Encephalitis is most often caused by viral infections, not exclusively bacterial.
B. Encephalitis is inflammation of the brain tissue, typically due to infection or autoimmune processes.
C. Muscle pain may occur but is not the primary symptom; neurological symptoms like headache, fever, confusion, and seizures are more common.
D. Encephalitis can be severe and life-threatening, requiring prompt medical treatment.
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Related Questions
Correct Answer is D
Explanation
A. Jugular distention is more commonly associated with right-sided heart failure.
B. Dependent edema is typically seen in right-sided heart failure due to systemic venous congestion.
C. Nocturnal polyuria can occur in heart failure but is less specific.
D. Frothy sputum is a classic sign of left-sided heart failure due to pulmonary congestion and edema caused by impaired left ventricular function.
Correct Answer is A
Explanation
A. Decerebrate posturing is characterized by extension and rigidity of the arms and legs, typically indicating damage to the midbrain or pons. It reflects severe brain injury.
B. Tonic-clonic seizures involve rhythmic muscle contractions but are not posturing.
C. Involuntary twisting and repetitive movements describe dystonia or chorea, not decerebrate posturing.
D. Uncontrolled jerking movements describe myoclonus or seizures, not decerebrate posturing.
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