Symptoms becomes evident only when the intensity of infection is relatively high. Thus the degree of negative outcomes is directly related to worm burden; more worms means greater severity of disease. General Most conditions of<unk>  have a light worm burden and usually have no discernible symptoms. Heavy infections however cause a range of health problems, including abdominal pain, diarrhoea, blood and protein loss, rectal prolapse, and physical and mental retardation. Severe ascariasis is typically a pneumonia, as the larvae invade lungs, producing fever, cough and dyspnoea during early stage of infection. Hookworm infections insinuate a skin reaction (dermatitis), increased white blood cells (eosinophils), a pulmonary reaction (pneumonitis), and skin rash (urticarial). Iron deficiency anaemia due to blood loss is a common symptom. Malnutrition<unk>  is often associated with malnutrition in children as it worsens their nutritional status in multiple ways. The worms can induce intestinal bleeding, competition for nutrients (malabsorption of nutrients), frequent anaemia and diarrhoea.<unk><unk>  helminths can also cause loss of appetite. These nutritional "knock on" effects of<unk>  can have a significant impact on the mental and physical development of children. In endemic countries, communities remain suppressed due to malnourishment, cognitive disability and physical weaknesses as a result of heavy infections.
Soil-transmitted helminthiasis
Helminthiasis
Behavior-altering parasite
Pinworm infection
Tick infestation
Trichiasis
Acariasis
Toxocariasis