Parasitic Worm Infection
Parasitic worm infections occur when helminths, roundworms, hookworms, tapeworms, or pinworms, take up residence in the gut or other tissues. They are among the most common infections worldwide, particularly in warm, humid climates where soil contamination supports transmission.
Key points
- These worms establish themselves in the digestive tract, typically after being swallowed via tainted food, water or dirt.
- Unlike most of these parasites, hookworms can burrow straight through unbroken skin to enter the body.
- A light infestation may cause nothing noticeable, whereas a heavier or long-running one can bring on stomach pain, low iron and poor nutrition.
- A brief course, sometimes just one dose, of a wide-acting antiparasitic medicine clears the majority of worm species.
How worm infections spread and who they affect
Most intestinal worms enter the body through contaminated food, water, or soil. Hookworms can penetrate bare skin directly. Symptoms range from none at all (in light infections) to abdominal pain, bloating, nausea, diarrhoea, and fatigue. Heavy or longstanding infections can cause anaemia and nutritional deficiency, particularly in children.
Treatment typically involves a short course of an antiparasitic medicine. Albendazole is the most widely used option, it works against a broad range of worm species and is usually given as a single dose or short course. If symptoms persist or worsen after treatment, or if you notice worms in stool, experience severe abdominal pain, or have unexplained weight loss, a doctor should assess you.