A worm infection can cause a variety of symptoms depending on the type of parasite and the severity of the infection. Common signs include stomach pain, diarrhea, nausea, vomiting, bloating, and unexplained weight loss. Many people also experience fatigue, weakness, itchy skin, or frequent hunger. In some cases, worms may cause anemia or visible worms in stool. Poor hygiene, contaminated food, and unsafe water are common causes of worm infections. Early diagnosis and proper treatment are important to prevent complications and improve overall health. Maintaining cleanliness and regular medical checkups can reduce the risk of infection.