<s>[INST] Hi Doctor, Good evening....I suddenly lost erection during the intercourse and after a week of rest it recovered...can there be any reason or start of development of any abnormality, i was not having any anxiety, BP or sugar issue....please suggest... [/INST] Dear user,I could help you in better way if you reported your age and how frequent (number of occasions) such thing happened with you.What you described is situational loss of erection.This happens to almost 60 to 70 percent of men.Do not worry about finding the causes of it. Your organs are working normally.Just enjoy kindling of sex during intercourse. That’s it!!Wish you good health. </s>