maybe threadworm

You may have threadworm or strongyloides/trichostrongyles or a similar roundworm infection. nothing will eliminate them that I know of except a longterm protocol of worming meds specifically targeted for these evil little worms. i am into my 13 month of meds an I am 98 percent better ,no more scalp problems ,sinus problems ,skin problems just an itchy butt once or twice a week from the encysted ones which is less and less each week. those specs on the black rag , I have posted mine in Image Gallery along with the threads you find in clothes ,type in sharkman in search bar Tweet