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hello,I am Dr. Aren and I will help with your query.It would help if you vacuumed all carpets and cleaned the bathrooms and bedroom floors regularly as the pinworm eggs are viable for over 2-3 weeks.Cutting your nails and avoiding scratching will help.The drugs used are mebendazole/Albendazole,I personally prefer mebendazole which is given for three days,the cure rates are 97-100%.The rest depends on the hygiene practices,and avoiding reinfection.Washing underclothes/underwear and bedding will help,opening the curtains to sunlight will help.Cleaning all surfaces which are likely to harbour the eggs will help.
http://www.medpagetoday.com/infectiousdisease/publichealth/2020 is a site of interest.
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Please do not lose heart,gradually reinfection will stop as eggs will be neutralised.
The advantage of mebendazole over the other drugs is that it is taken over a 3 day period thus covering you for longer than single dose medication.The small pinworms will also gradually die out as reinfection is controlled by frequent showers,cleaning bed linene and cleaning other surfaces where eggs may possibly be found.The nignt gown/pyjamas and underwear should be washed thoroughly and separately as it will contain the most eggs,please do not wash them with other clothes.It will take 3 courses ,3 week apart to get full resolution of the problem,the young/small pinworms are normally more drug resistant.Treating the whole household simeltaneously,strict hand washing before eating anything is essential.We normally use mebendazole in doses of 100 mgms twice a day for three days as a single course,three courses 3 weeks apart.