Hi Robin, one reason it is difficult to diagnose parasitic diseases in people, is that the symptoms of parasitic diseases are quite like many other diseases. The symptoms can range from nausea, vomiting, diarrhea and weight loss.
As you can see, the symptoms are quite common in various maladies. So consequently a diagnosis of parasitic diseases becomes somewhat more difficult without further information present.
And in fact if you live in a non-third world country, it's one of the last thing's they think of, I suspect.
