Hi doctor, my future husband got chopped in his neck on the 13th of August, 2016. He alarmingly lost a lot of blood. The blood loss was extreme. The chop was 11 inches long and 6 inches deep. After the horrible incident. I have recently realised that he has been having problems getting an erection. What may be the cause of this? Will this be permanent? He is just 23 years old.