What is the status of a medical check up of one’s private parts? Under what circumstances is it allowed? Can a lady expose herself to a male doctor?

Islam has prohibited people from exposing their private parts because sexual promiscuity adversely affects the inner purification of a person – the very objective of Islam. Obviously, a medical check-up by a doctor that involves the examination of the private parts is an exception. In this regard, the only thing that a lady should try for is to go to a female doctor. Again, female doctors and specialists may not be accessible at times for various reasons. In such cases, of course, she may have no other option but to show herself to a male doctor.