In pediatric shock, which of the following is an early sign?

Correct Answer: D

Rationale: Tachycardia is an early compensatory mechanism in shock, whereas hypotension and altered consciousness are late findings.

Correct Answer: A

Rationale: Eosinophilia is not typically associated with Giardia infection, but it is common in the other conditions listed.

Correct Answer: C

Rationale: Distributive shock is caused by vasodilation and fluid maldistribution, as seen in early septic shock, unlike cardiac or hypovolemic causes.

Correct Answer: C

Rationale: Acute weight gain is not a common sign in chronic heart failure in infancy; rather, poor weight gain and growth failure due to increased metabolic demand are more typical.

Correct Answer: D

Rationale: Intense itching is a hallmark feature of atopic dermatitis often leading to scratching and worsening of symptoms.