Q. My 14-year-old daughter fainted three days back in the morning. What could have caused it?

Hello, I hope she is doing fine now. There are numerous causes for fainting (syncope). 1. Dehydration- improper intake of water may lead to dehydration Anemia/ menstrual cycle may also lead to syncope in female adolescents 2.vasovagal- emotional upset, anxiety , sudden standing from sitting position, prolonged standing- leading to vagal stimulation and fall in cerebral perfusion causing fainting attacks. 3.cardiac- arrhythmia, structural heart disease, family history of heart disease or sudden death in family 4.neurological- may mimic seizure or vascular event. -Specific triggers - positional changes, intercurrent illness, an emotional or painful stimulus, or a hot environment. These symptoms are typical for vasovagal syncope. Chest pain or palpitations immediately before syncope points toward cardiac disease- may require referral to a pediatric cardiologist and complete work up- blood pressure monitoring, ECG, 2D ECHO, 24 hrs holter monitoring If above mentioned causes normal then seek neurologist opinion Advice- Adequate fluid and salt intake Correction of anemia Avoidance of trigger like anxiety/pain/emotional upset Seek cardiology opinion if history/ symptoms points towards cardiac origin( if hypertensive/ cardiac disease then salt restriction) I hope this has given you some insight. Feel free to revert back in case of any doubt. Good day