Can Physicians treat their own family members?

Madam, there have been numerous occasions where a physician has to deal with members of his own family. It is no doubt true that relatives and family members will approach there own family doctor to inquire about any symptom or illnesses that raise any concerns. After all it is easy to talk to them at a party and just to cure away some concern immediately rather than wait for an appointment and a long queue before being attended too. But the main difference comes when doctors need to treat there own immediate family i.e parents, siblings and children.