Parasite infections are quite common -- especially in children who are more likely to come into contact with dirt and surfaces hosting the organisms. The severity of a parasitic infection varies based on many factors including the type of parasite and the individual's age, immune system health, and how long the infection persists prior to diagnosis. Parasite infections can cause a range of symptoms, many of which are not exclusive to this ailment.
Stomach pain may be one of the first symptoms to develop when a person contracts a parasite, especially those that afflict the intestines. Various parasites live in foods such as red meat, and if this food is not cooked properly, the organisms can enter the body through the stomach after ingestion. In addition to contracting parasites in food, some can also spread from person to person or through the air and through skin contact. Contaminated water can also be a source. Once inside the body, parasites begin to procreate, and this causes pain to increase.
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