 [ Symptoms ] random fainting spells every few months  hello  i am a healthy 23 year old male who has experienced several random fainting episodes in the past year they have all happened at night and come on very suddenly without warning i get extremely lightheaded for a few minutes i lose consciousness for a few seconds and then everything returns to normal within an hour these are accompanied by intense feelings of nausea and sometimes vomiting these do not seem to be related to eating or drinking is this normal or should i be concerned [ Disease ] i understand you are worried please do not worry sinus tachycardia is just fast heart rate and yours is just slightly elevated probably you were a little anxious during the time of the examination st and t changes are often seen in normal healthy patients it could be due to some medications it is highly unlikely that you have any cardiac related issues at this age but if you have experienced any chest pain of recent or shortness of breath then it could be a cause for worry if you do have symptoms such as shortness of breath or chest pain then i will advise that you repeat the ekg test as a conclusion because it cannot be drawn from one ekg test result for further information consult a cardiologist online   > <link>