Keep your nails short always. Scrub underneath them with srub brush.
Keep all clothing bagged until washed in hot water, underwear and pants. Do not wash the tops in hot water, they are fine.
The bedroom, must be all washable, bedspread etc. The sheets and pillow cases must be washed every day until u get the infection slowed down then every 3 days after that.
the toilet must be sprayed after each use and wiped down, use disposable gloves and wear a mask to change linens. Pinworms, thread worms seat worms all the same thing..they are xtremely light and can float into the air..become airborne and results in auto-infection.
do not worry about being around people..just keep the hands and nails clean. We never gave it to anyone, I have kids over here 24/7. Just do these things and it will eventually work.
also keep in mind that if it persist it could be ascarsis or tapes too..these act the same. But pinowrms are the worst in itching..the others too can bite and sting and crawl out the anus during th day.