Understanding the true and false characteristics of early puberty in young boys, as well as the corresponding medical examination approaches.

Discuss whether a 6-year-old child’s head circumference of 48 centimeters is indicative of microcephaly and provide professional medical advice.

Discuss the possible reasons for the presence of trace amounts of blood in a three-year-old child’s urine and provide corresponding medical examination recommendations.

Understand the symptoms of bronchitis and the importance of medical examination, as well as related treatment methods.

Understand the standard for hearing screening of premature infants, including the normal range of hearing thresholds and the grading of different degrees of hearing impairment.

The detection of neonatal hemolytic disease includes blood routine, reticulocyte count, and red blood cell morphology examination.

Understand the three key tests for neonatal hemolytic disease to ensure neonatal health.

Understanding the necessary tests for pediatric asthma of the bronchus, including blood routine, chest X-ray, lung function, and more, to ensure appropriate treatment.

Understand the possible causes of bright spots in bladder B-mode ultrasounds and the necessity of symptomatic treatment.

Frequent knee and ankle joint pain in children can be caused by various reasons.