when my son was small the allergy docs said i shouldnt vacumn the house with my son in it. because of his dustmite allergy, however i didnt have a place to put him that was dustmite free!
however i did notice that if he was in the room with me while i was using the vacumn he started frantically scratching.
he also , when he sat on the sofa or carpet, scratched the back of his legs.
when he was crawling, in the summer, if legs were bare his eczema developed on the front of his legs, and when he learnt to walk, it cleared up and remained on the back.
when he was born we lived in a carpeted house that the previous owners had a dog and a cat. but we didnt know about allergies then, so didnt twig that this was a cause.
after getting testing, discovered he was allergic to most of the enviromental allergies. started changing the home, and his environment and he began to sleep for longer and deeper periods of time. his skin improved, and once we got the food allergens out of his diet his skin routine changed , to a more simpler routine. so in that respect we were very lucky.
we only had the worst ezcema from age birth - 5, and his skin is still very thin and dry, but as a teen , its his job to apply, not mine. he only needs the mositurizers , and steroid creams stopped at 5.
our home is full of dust, as i am working and studying and so dont have the time i once did to keep things under control, in fact removal and control of dustmite could be a full time job in its own right!
a air filter for removing dustmite and pollen really has made a difference to sleep quality btw!
enviromental allergies are very , very expensive imo.