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Diagnosis of Threadworms

Threadworms are difficult to see because of their size and colour. The best time to try to see them is at night, when the females come out to lay their eggs.

Sometimes worms and eggs can be found in stools (faeces). The worms look like little pieces of white cotton thread.

A sample can be taken by applying a wide piece of hypo-allergenic sticky tape to the skin around the anus. If done first thing in the morning, before bathing or wiping, this will pick up eggs, which can then be identified under the microscope.