Who & what are the demons ?

As an atheist, I cannot say that I 'learned' to become an atheist. It was actually a result of utilizing deductive logic and coming to a conclusion on my own. But I was not taught in anyway to become an atheist. If anything, I grew up in a time when bible study was still taught in public schools. My parents were Greek Orthodox and while we weren't excessively religious, we did attend churches from time to time. Yet the conclusion I came to did not align with what I was actually being 'taught' as it pertains to religious beliefs.

Sorry, but demon possession, like many other old world beliefs was simply how the primitives explained what they did not understand. We have knowledge of numerous diseases that exist nowadays that when they manifest, would give the appearance of something terrifying. Especially if that individual doesn't have a fundamental understanding of anatomy of disease pathogens.You can find videos on youtube of individuals in the later stages of diseases like rabies or certain forms of inflammation of the brain. They are quite difficult to watch and from the perspective of some individual from the middle ages would come across as evidence of 'demon possession'. Yet we all know these are not any form of supernatural usurping of anyone's body. They are the manifestation of symptoms of an illness.Believing in demon possession is completely anachronistic in our modern day and age. It's akin to believing that thunder and lightning are created by Thor or that some evil nymph caused the brown spot on my lawn.

Depends on what type of treatment is involved. For types of clinical mental illness, it is usually therapy with some drugs potentially being used. In other cases such as inflammation of the brain caused by something like rabies or encephalitis, it could be antiviral medications or anti-bacterials. I am sorry for your loss, but I somehow doubt any 'demon' had anything to do with that. Why would a demon even be susceptible to medications provided to someone? If they are some 'ethereal' entity, they would not be affected by anything in our 'mortal realm'.To be honest, these types of views are not only anachronistic, but quite dangerous. If anyone remembers the Virginia Tech shooter; someone who was obviously very mentally ill. Well, it turns out his mother sought help for her son -- from her church. Yes, that is correct. Instead of taking him to see medical professionals, she instead had her priest perform an exorcism. And we all saw how that turned out.