Please try and search ekbom syndrome as this can destroy families it's as devastating as Dementia but unless you listen to your partner and teenagers you will probably lose them all.
There is help out there there is no cure but treatment antipsychotics will help and therapy please please don't blame anyone in the household or yourself it's unfortunate but be PROACTIVE and go to see your doctor read this to them if you like even take the hundreds of bits of evidence I know you will have kept this is a classic symptom of the condition called "the matchbox symptom"
Your loved ones aren't saying they don't see what you see to be mean they love you it's because it's hard for them to see you suffer when you could get help
Thanks for reading and good luck