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The sooner you can catch the infection the better, as that way you can start medical treatment and hygienic prevention measures at home as soon as possible. Common signs and symptoms include:  Itching and irritation around the anus Potential signs of irritation or infection on the skin around the anus (particularly in children, who are more likely to scratch there which can lead to an infection from broken skin) Difficulty sleeping (due to anal itchiness) Irritability (from itchiness and poor sleep) Sometimes vaginal itchiness or irritation in girls (as on rare occasions the female worm can enter the vagina rather than the anus). " If you suspect you or someone in your household may have threadworms, contact your doctor as soon as possible. As previously mentioned, rapid diagnosis and treatment is key to getting rid of the infection as soon as possible. For a tape test, the doctor will ask you to take a piece of cellophane tape and press the stick-side against the skin surrounding the anus. Remove the tape and put it in a plastic bag and give it to your doctor, who will check under the microscope for the presence of eggs. Eggs can only be visualized under the microscope. A test positive for eggs is diagnostic for a threadworm infection.  Do the tape test first thing in the morning, before showering or using the toilet. Make sure you wear gloves and wash your hands thoroughly to avoid spreading the eggs. Don't let the tape touch anything, either! It is key to understand that if you are in the same household as someone diagnosed with threadworms, you will be advised to take the medication (and to practice the hygienic measures) without needing to be formally diagnosed with threadworms. This is because your risk is high enough, so it is better to be safe than sorry and the benefits of treatment far outweigh the risks.
Recognize the symptoms of a threadworm infection. Administer a "tape test. Opt for treatment anyway if you live in the same household.