Strongyloidiasis in Cats    Strongyloidiasis is an uncommon intestinal infection with the parasite Strongyloides tumefaciens, causing grossly visible nodules and diarrhea. (It is also possible for cats to develop an infection with the parasite S. stercoralis, but there has not yet been a reported case in the United States.) S. tumefaciens is relatively host-specific, but there is a potential for transmission to humans.   Symptoms and Types   Inflammation of the skin, rash (dermatitis) Cough, bronchopneumonia