### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
hi my name is anonymous, i am 21 years old, am 85 kilograms and 1.75m tall, i am on no medication, i am a vegeterian-for 3 months now, i have no chronic ailments and am fit and in good shape although i smoke cigarettes, i have recently been on a health binge to purge my system of toxins,(no drinking or narcotics). Yesterday i was out with friends celebrating my friends birthday, i drank whiskey-3/4 of a bottle, tequila-1 shot, 2 beers, i then proceeded with my friends to get pizza at a corner store, i ordered a pizza then went outside and asked a friend for a drag of his cigarette( it turned out later that it was a substance called mr nice guy), i took a puff then went back inside, i began speaking to a friend, then everything began to slow down in my mind, my speech slowed to point of me not being able to speak, i turned to the pizza man and then blackness, with a feeling of euphoria and utter terror mixed into one, which felt like 3 seconds, i then woke up on a chair surrounded by my friends telling me that it is going to be ok, apparently what had happened is that the pizza man saw all colour disappear from my face, i stopped speaking and stared at a fixed point, i was completely unresponsive, my heart was moving at an abnormal pace, i then fainted, but my eyes remained open the whole time, my friends then put me on a chair and i was unresponsive for 20 minutes in real time, but in my mind only 3 seconds had passed, i then regained consciousness and began to speak slowly, i felt completely sapped of energy as if i had been drained, i could not speak and was unable to focus on anything. It was the scariest thing that has ever happened to me, i managed to walk home and pass out but, today i have an incredible headache. My question is this, how did i faint with my eyes open? why did there seem to be so short a time in my head and yet i lose 20 minutes of my life? and finally, what damage have i done to my mind? please help me

### output:

Hi, You had a sudden transient loss of consciousness also known as Syncope. Patients like you who are considered healthy, young, with no previous medical conditions, and with the first single episode of syncope usually don't need to worry or any further investigations. However, to be on the safe side it is better if you could visit your family doctor to get a physical exam and an ECG to rule out heart conditions. Also, he or she might ask for blood test for anemia since you changed your diet lately to vegetarian diet you might be at risk of B12 deficiency and or iron anemia. Moreover, it is advisable to avoid alcohol, smoking, or any substance abuse as this might provoke syncope attacks. Take care. Hope I have answered your question. Let me know if I can assist you further. 