What Is The Treatment For Thread Worms Around The Anus?

Hi Doctor,

my lil one is 6months old and he is having solids everyday. it contains ,

rice cereal, apple, pears, oat porraidge, potatoes.



Today morning I noticed small thread like white things near to anas. I am not sure whether these are something to do with diapers, things that he ate, applied cream or worms. I am woried about worms. appreciate your help.