<span>Platelet is a term that is not used to refer to white blood cells. Platelets are the smallest of all blood cells, and make up a very small fraction of blood volume. The function of platelets is to prevent bleeding, whereas the function of white blood cells is to fight off infection and increase immunity to disease.</span>
It is true that many people infected with tapeworms maybe unaware of infection due to lack of symptoms.
Personally, I think that therapy gets very personal at times, some people would rather see a recovery without having to open up about their issues with a person who they likely do not know. They might either have a hard time opening up, feel uncomfortable, some people don’t even believe in therapy! There’s that one saying “What good will talking do?” some people really have that mentality! So they deal with their issues with meds.