Morgellons's disease is a very controversial diagnosis with many doctors believing that the patient has delusions of being infested by parasites as no parasite is ever detected by any tests. But since you can see the parasites, try taking a photograph with a good camera and then show the parasite to your doctor. If however nothing comes in the photograph, then do consider a trial of antipsychotic
medicines for delusional parasitosis
. If it helps resolve your symptoms, it is good and you will be much relieved. If it doesn't work, then your doctor will know that this is not a delusion of being infested.
Hope this helps you. Best wishes.