A 1-year-old boy presents with recurrent pneumonia and steatorrhea. Sweat chloride test is positive. Most likely diagnosis is:

Correct Answer: C

Rationale: Cystic fibrosis fits pneumonia and positive sweat test, per CFF. A, B, D, E differ.

Correct Answer: A

Rationale: Sunken eyes A indicate dehydration, per document p60, 6.

Correct Answer: C

Rationale: C. trachomatis is the top cause of cervicitis in adolescents, per CDC, due to sexual transmission. HSV and others (B, D, E) are less common.

Correct Answer: C

Rationale: Hereditary spherocytosis shows spherocytes, per ASH. A, B, D, E differ.

Correct Answer: C

Rationale: Hypnotherapy (C) uses a hypnotic state for suggestions aiding smoking cessation and pain control. Guided imagery (A) aids relaxation, hydrotherapy (B) uses water for therapy, and biofeedback (D) manages stress via physiological feedback. Document: 'Smoking cessation and pain control have been successfully achieved using [hypnotherapy].'

Correct Answer: A

Rationale: CAH fits XX karyotype and maternal virilization, per AAP (doc p148, Q561).

Correct Answer: A

Rationale: Type 1 diabetes is the most common form in children, per AAP (doc p150, Q593).

Correct Answer: C

Rationale: Mononucleosis features petechiae, per CDC. A, B, D, E differ.

Correct Answer: D

Rationale: All D assess head injury, per document p54, 1.