How can i know for sure if my husband is a hypochondriac?

Cannot be certain.: Sometimes, persistent complaints can be a sign of a medical problem. I don't know the details, such as whether the complaints are all about one area of the body or organ system, or whether he complains about a lot of different things. He should have a thorough medical evaluation; if all the studies are normal, it's more likely that he is a hypochondriac.