The MOST appropriate advice for a 4-year-old child visiting the outpatient department with excessive crying is

Correct Answer: B

Rationale: Further history may help differentiate normal behavior from developmental concerns.

Correct Answer: C

Rationale: The best place to assess for jaundice in a dark-skinned newborn is in the sclera, conjunctiva, and oral mucosa. Jaundice, which is caused by elevated levels of bilirubin in the blood, is more easily seen in these areas compared to the skin. While jaundice is commonly assessed on the skin in light-skinned individuals, it may not be as readily apparent in dark-skinned newborns. Therefore, examining the sclera, conjunctiva, and oral mucosa for a yellowish discoloration provides a more reliable indication of jaundice in dark-skinned infants. This approach ensures that healthcare providers can accurately detect and monitor jaundice in newborns of all skin tones.

Correct Answer: C

Rationale: Osteogenesis imperfecta, also known as brittle bone disease, is a genetic disorder that affects collagen production, leading to brittle and easily fractured bones. In addition to bone fragility, individuals with osteogenesis imperfecta may also experience teeth abnormalities such as dentinogenesis imperfecta (discolored and weakened teeth) and ligament laxity due to the improper development of connective tissues. This incomplete development of teeth, bones, and ligaments is a characteristic feature of osteogenesis imperfecta, making it the correct choice in this scenario. Congenital hip dysplasia, Duchenne's muscular dystrophy, and osteomyelitis do not typically involve the same constellation of symptoms related to teeth, bones, and ligaments seen in osteogenesis imperfecta.

Correct Answer: D

Rationale: By 6 months of age, infants should be able to fix on and follow a target with their eyes. This behavior is indicative of normal visual development in infants. It typically signifies that the infant's visual acuity is developing as expected. Therefore, by the age of 6 months, most infants should demonstrate the ability to focus on and track objects within their field of vision.

Correct Answer: C

Rationale: The measurement is consistently low, indicating it is neither close to the true value (inaccurate) nor consistent with the reference range.