The list below is a parcel list of diseases, infections, viruses, sickness, cause/affect, evil, wickedness and demonic spirits. The one thing that they all have in common is they are all demonic in origin. Demonic forces delivered them to you from the dark spiritual realm that’s present in and all around us.  Many of them are demons. This is how you received them in the first place. They came to you by “rights of passage” to be in your flesh through your bloodline called "generational curses" or through your sin, bad behavior, thoughts, perversions, lust, evil, wickedness, ungodliness, abominations, false gods or actions, etc. It's that simple. 

The world will not tell you this because they don't know this. If your demonic spirits do not have any rights to you (see generational curses section) then you bind them and command in the name of Jesus for these spirits to leave your body and they will adhere to what you're saying if your a mature Christian and know the Word of God well enough. When people are being healed and set free as demons are cast out, then you know the truth for yourself. This is the truth that will set you free.

Ephesians 6:12 For our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against the spiritual forces of evil in the heavenly realms.

You might wonder what a demon is or how they came to be.  A demon is a fallen angel, full of evil on assignment from Satan to oppress humans and creatures (flesh).  To control you and hinder you as you grow in the Word of God.