Most common cause of adrenal insufficiency in chil

ATI LPN

ATI LPN Test Bank

Most common cause of adrenal insufficiency in children is:

A. Addison disease B. Congenital adrenal hyperplasia C. Adrenal hemorrhage D. Tuberculosis

Correct Answer: A

Rationale: Addison disease is the most common cause of primary adrenal insufficiency in children, per AAP (doc p150, Q587).

A 4-year-old boy presents with fever and a swollen knee. Aspiration shows gram-negative bacilli. Most likely diagnosis is:

A. Septic arthritis B. Reactive arthritis C. Juvenile idiopathic arthritis D. Osteomyelitis

Correct Answer: A

Rationale: Septic arthritis fits fever and gram-negative bacilli, per AAP. B-E lack infection.

A 6-year-old boy presents with fatigue and pallor. Labs show hemoglobin of 7 g/dL and reticulocytosis. Most likely diagnosis is:

A. Iron deficiency anemia B. Sickle cell disease C. Hemolytic anemia D. Thalassemia

Correct Answer: C

Rationale: Hemolytic anemia fits pallor and reticulocytosis, per ASH. A-D differ in labs.

A 2-year-old boy presents with fever and vesicles in the mouth. Most likely diagnosis is:

A. Herpangina B. Hand-foot-mouth disease C. Chickenpox D. Measles

Correct Answer: B

Rationale: HFMD features oral vesicles, per CDC. A, C-E differ.

A 5-year-old boy presents with hematuria and proteinuria. Labs show low C3. Most likely diagnosis is:

A. Nephrotic syndrome B. Poststreptococcal glomerulonephritis C. IgA nephropathy D. Lupus nephritis

Correct Answer: B

Rationale: PSGN features hematuria and low C3, per AAP. A, C-E differ.

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