How Can Skin Allergy Due To Dust Mite Be Treated?

What type of Dr do I need to treat me for a persistant problem My family and I have encountered as well as our dog...it seems as we have encountered pests...dust mites,we have as well as millions others have already been thru a bought with bed bugs there not entirley gone...we live in a 2 story older house...Imy parents are in there early 80 s...one is in denial....they have infested our skin eyes ears nose and insides and lower privates as well as embedded into our skin...there very small white larva and they develope into almost clear bodied mostly red mite ..long bodied humped back kinda...vicious...but somewhere thru that mess dont know where that fits in...it kinda looks like a fibre worm....My son had went to the E.R for his infection and was having problems with them laying eggs in his eyes he is 33....They seemed more worried about him being psyciatric evaluated for 72 hrs before giving him a examination....Ive lost my medical insurance and a pharmisist..I had spoken to had priced a physician prescribed head to toe medication for almost $100...so at this timeits almost pointless to even think about the medical bill..testing alone on the pest or mite alone would be thru the roof...even tho i have samples..dont matter how much we clean wipe and swipe change out bed linenes shower vacuum....they live off of us..were the host..were contagious to each other and our dog