What is the hallmark symptom of Gout?

Correct Answer: C

Rationale: Severe pain, often in the big toe, is the hallmark symptom of gout due to uric acid crystal deposition.

Correct Answer: D

Rationale: The therapeutic effect of phototherapy is influenced by distance, skin color, and exposed skin area, but not by in vivo bilirubin metabolism. The other factors are important for phototherapy efficacy.

Correct Answer: B

Rationale: Catch-up weight gain of 20-30 gm/kg/day is considered the minimum acceptable rate for children recovering from failure to thrive. Lower rates indicate insufficient progress, while higher rates may reflect excessive caloric intake.

Correct Answer: A

Rationale: Atopic dermatitis typically presents with flexural eczema rather than extensor eczema in adolescents.

Correct Answer: D

Rationale: Atypical antipsychotics are generally not the first-line treatment for depression in children. Antidepressants are more commonly prescribed for depressive disorders.