Filariasis Hookworm Pinworm Roundworm infestation typically occurs by ingesting worm eggs that have contaminated the hands, drinking water, or food. Some infestations result from worm larvae penetrating the skin, as with hookworm or from bites from infected insects, as with filariasis.
Many roundworms primarily infect the intestine; examples include hookworms and pinworms.
Often, these cause no symptoms or only mild ones, such as abdominal pain and diarrhea. Some roundworms primarily affect parts other than the intestine.
For example, filariasis mainly affects the lymphatic system and can lead to elephantiasis (massive swelling of the legs or scrotum).
Treatment of roundworm infestation is with anthelmintic medication to kill the worms