Multiple sexually transmitted diseases.

There are at least 16 possible sexually transmitted diseases, and it is not uncommon to find patients suffering from two or more sexually transmitted infections or infestations. Case histories of two men, one with gonorrhea, scabies, and pediculosis pubis, the other with syphilis and scabies, illustrate this point. It is to be emphasized that when one venereal disease is found, the clinician should look for another.