University of Nebraska-Lincoln: What are Nematodes?.Centers for Disease Control and Prevention: Parasites-Hookworms.

Cleveland Clinic: Parasitic Roundworm Diseases.Treatment typically lasts one to three days. Hookworms are treated with anthelminthic medications, such as albendazole and mebendazole. However, a heavy infestation can cause abdominal pain, appetite loss, weight loss and anemia. If you have a light infestation of hookworms, there are usually no symptoms. Then the hookworms ascend to the pharynx where it is swallowed and enters the digestive system, where it grows in the small intestines. Hookworms enter through the skin, usually the feet, and move through the veins to the heart and lungs. If the hookworms are found in large numbers in the human body, they can block the lymphatic system causing life-threatening edema. There are 576 to 740 million people in the world infected with hookworms, according to the Centers for Disease Control and Prevention 2. Hookworm hosts on humans with its six sharp teeth and roundworms look similar to earth worms.The large numbers of worms in the nematode family make it nearly impossible to identify each species.

Small flat segmented worms in cats pics