A 12-year-old girl is brought to your clinic by her father with a complaint of recurrent chest pain. Upon asking questions, the girl informs you that she has been experiencing this pain since the last five days. She further informs you that whenever it pains, she feels like something sharp is piercing through her chest. Based on her complaint and indications, you understand that the pain is localized to the upper left border of the sternal and lasts for about one minute. You rate the intensity of the pain 5/10 based on your conversation with the girl.

Physical examination     By observation, the girl is cheerful, active, and talkative. All her vital signs appear to be normal. The girl does not have any history of allergy, cough, and fever. However, during the physical examination, she reports that the pain during physical examination was similar to the chest pain she felt for the last…