Reapected sir i have a query . I have a brother ,he used to say severe chest pain for 3 days ago ,then on fourth day it continued and found unconscious in the room . He never smoked ,drink alcohol and take any kind of tobacco and drugs . He is a driver by profession in korea . we are worry to listen that he is in hospital on O2 inhalation in unconscious state . What may the causes for this condition? He doesnot have any significant  previous history before.
Respected user, HiT hanks for using Chat Doctor.come have evaluated your query thoroughly.* There are so many medical conditions according to the age (not mentioned here) giving rise to above said scene.* Different possibilities in general may be - transient ischemic attack - cardiomyopathy - coronary artery occlusions - other brain conditions - systemic disorders as high blood pressure , diabetes beyond limits - others.* Need thorough clinical work up with laboratory, MRI brain and other tests to reach at the depth of the issue. Hope this helps you. Welcome for further doubts. Regards.