Hi and welcome to HCM. Thank you for your query.
You need to do stool analysis to see is there any parasite infection as this can be caused by parasites or bacterial colitis
. And you need to do it as soon as you can so visit your doctor or gastroenterologist. Itching and body aches can be cause by various infections as well or it can be allergic reaction
to some new substance in this house. In every case you all must see doctor. Wish you good health.