The first goal of drug advertising is to define a category and convince people they have a disorder that no one had ever heard of before. Viagra invented "erectile disfunction" and went on to make billions of dollars, and an industry was born.
So in this context you are saying that HIV is a disorder that was invented by advertisers in order to sell anti-virals? Do you have any evidence to substantiate that(or your claim that ED is not a clinical condition?)
I read that in a way "invented" is usually used (esp due to use of "define a category"): someone was the first to do it. Not as in "it's an imaginary thing".
Are you suggesting that impotence is an invented ("medicalized") condition? I should start a physicians of hacker news blog... Prozac and premenstrual dysphoric disorder is a better example.