Worm infections can cause a wide range of symptoms depending on the parasite and severity. Common signs include abdominal pain, diarrhea, nausea, vomiting, bloating, and unexplained weight loss. Some people experience itching around the anus, especially with pinworms, or visible worms in stool. Fatigue, anemia, and nutrient deficiencies may develop over time. In children, growth delays and irritability are possible. Skin rashes, coughing, or breathing issues can occur during larval migration. Proper diagnosis is essential, and treatments such as mebendazole are widely used; access through mebendazole wholesale suppliers supports public health programs worldwide for prevention and control of parasitic infections.