What is the likely diagnosis in an infant that presents with one month of biphasic stridor that improves with neck extension, but not with prone positioning?

A 42-year-old woman presents with severe epigastric pain radiating to the back. Labs show elevated lipase and ALT of 420 U/L. She denies alcohol use. Most likely cause?

A patient with psoriasis develops dactylitis and nail pitting. Which condition is most likely?

Which electrolyte abnormality is most typical in advanced CKD?

A 10-year-old child with cyanotic congenital heart disease presents with seizures. CT brain shows ring-enhancing lesions.
What is the most likely cause?

What is the coenzyme (active) form of vitamin B6? 

_____ is converted to sorbitol via the enzyme aldose reductase

Which drug commonly causes “Gray Baby Syndrome” in neonates?

Which drug is commonly used to reduce fever in children?

Which drug is most likely to cause ototoxicity?

Which drug is a calcium channel blocker used to treat hypertension?

A child has recurrent bacterial infections due to low antibody production. Which immune component is most likely affected?

A full-term newborn has no contraindications. When is Hepatitis B vaccine recommended?

A 3-month-old infant presents with severe viral infections and congenital heart disease. Lab shows absent thymic shadow on chest X-ray. Most likely diagnosis?

A 3-year-old boy presents with painless swelling of the scrotum that transilluminates on examination. What is the most likely diagnosis?

Which condition occurs when the foreskin cannot be retracted over the glans penis?

A newborn girl has fusion of the labia minora covering the vaginal opening. What is this condition?

A teenage boy presents with sudden severe scrotal pain and swelling. What is the most likely emergency condition?

Which sign is used to differentiate testicular torsion from epididymitis in children?

A 6-year-old girl presents with vulvar itching and irritation. The most common cause in children is: