How is pediatric sleep apnea diagnosed and treated, and what are the potential complications of untreated sleep apnea? What are the most common causes of pediatric skin rashes, and how are they typically treated? How is pediatric hypertension diagnosed and treated, and what are the potential complications of uncontrolled hypertension? What are the key considerations for the management of pediatric allergies, and how can parents and caregivers support the child's treatment plan at home?