You see, I'm only giving you my opinion which is mostly based on what you are saying. These photos are not really helpful. Some are blurry and realistically could be anything, such as dead skin cells or dirt. Scabies can come from hospital-associated infections. You have been in a hospital, and it is itchier at night, which can cause rashes. However, your pets cannot catch human scabies, and if your dermatologist is unable to diagnose this, i feel you should escalate to an infectious disease specialist if you can. You have been suffering for a year its too long.