What is your initial DDX based on this information?
Why did you choose certain diagnoses and not others?
5 year old male
Chief Complaint: Mother is concerned that he is dizzy
HR 130, BP 100/65, RR 24, Temp 103.4, O2 saturation 98% on room air, Height 43” (109cm) 50%, Weight 44lbs (20kg) 75%