1. Symptoms caused by larval migration: Ascaris eggs enter the lungs and bronchus, which can cause cough, chest tightness, blood silk phlegm and other symptoms. Severe infections may invade the brain, liver, spleen, thyroid and eyes, causing epilepsy, liver enlargement and abdominal pain.

2. Symptoms caused by adults: manifested as loss of appetite or hunger, heterophilia; abdominal pain, mainly in the umbilical periphery, like other people to massage the abdomen; some children will also appear irritable, frightening or dispirited, molars and so on. In addition, heterologous proteins of the parasite can cause allergic symptoms such as urticaria. Serious infection can cause malnutrition and affect growth and development.


The most common symptoms of Enterobius vermicularis infection are anal itching and blinking disturbance. Dermatitis and secondary infection may occur in local skin due to itching. Systemic symptoms include gastrointestinal irritation, such as nausea, vomiting, abdominal pain, diarrhea, loss of appetite, as well as anxiety, night terror, agitation and other psychiatric symptoms.

3. hookworm disease

Hookworm infection can cause dermatitis, skin exposure in thinner areas of the toes or fingers and other areas, and punctate papules or vesicles can occur. Hookworm disease can also cause respiratory symptoms, such as cough, blood phlegm, fever, shortness of breath and asthma, blood filaments in sputum, and even massive hemoptysis.

Anemia: Anemia manifested by varying degrees of anemia, pale skin and mucosa, fatigue, vertigo, affecting the physical and intellectual development of children, serious can occur anemic heart disease.

Digestive tract symptoms: Initially manifested as gluttony, polyphagia and hunger, but weight loss. Later appetite decline, abdominal distension discomfort, heterophilia, malnutrition and so on, serious cases may appear hematochezia.


Half of the patients had abdominal pain, usually epigastric or total abdominal pain. A few patients have diarrhea. Symptoms such as hyperappetite and dizziness.


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