A tapeworm is a type of parasitic flatworm that lives in the intestines of various animals, including humans. These worms can grow quite long, sometimes reaching several meters in length. Tapeworms attach themselves to the intestinal wall using specialized structures called scolex, allowing them to absorb nutrients from the host's food. Tapeworm infections often occur when a person consumes undercooked meat or contaminated food and water. Symptoms can include abdominal pain, weight loss, and digestive issues. Treatment typically involves medication that targets the tapeworm, helping to eliminate it from the host's body.