Would a kind of religious person suffering from these symptoms or perceiving them in another have labeled it as a demonic possession?

Catholicism is the One True Faith. A person can battle the devil and his demons using the rosary and fasting.

I am a Christian mystic, so most 'psychic' experiences are familiar to me.

I only use the term 'mystic' to imply my devotion to the lifestyle of 'dealing' with these kinds of phenomena, interpreting them back to sound judgment and GOD-given reasoning and to engaging in the 'fight' more than as some kind of dilettante or brash explorer of occult knowledge or experiences.

In 'modern' terms, dynamic prayer is like 'gaming' only the software and 'characters' are alive, having been created by GOD long ago as the 'original' version; an 'ultimate generation' version which modern men are instinctively attempting to recreate with their 'artificial intelligence' pursuits, even while foolishly denying the existence of GOD or His 'elohim,' (the ancient term for His angels and demons).

Angels are like 'good' programs fulfilling GOD's commands and demons are like 'bad' programs, set on self-termination and trying to create 'crashes' after building up as much seemingly constructive activity as they can ultimately betray.

Demons do not show their true face or intentions unless exposed. They arrive as 'enlightened compassionate and progressive' influences, (2 Corinthians 11:14). They inspire art, music, drama and social genius. They are responsible for the founding of entire civilizations. If they are successful, you will never even sense the 'crash' coming until it occurs. They use 'public spin' to make everything seem 'normal and healthy.' For example, 70 million dead or dying from just one lethal virus unleashed through open sodomy and fornication is being spun as 'the unavoidable price of enlightened modern love.' Those casualty rates are comparable to the total casualties on both sides of World War II.

Any entity being perceived by you as 'malevolent and dangerous' is more likely a righteous angel of GOD bringing warnings, attempting to inspire repentance or trying to reach you with a message.

Often these so-called 'migraines' are the result of attempting to suppress or alter their messages, or even twist them into malevolent intentions. Your sense that other intelligent persons are present or 'watching' should not come as a surprise, since they are. Even though they are comparable to running computer programs, they are GOD's version. They are not lifeless codes. They are living 'Persons' with sentiment, deep feelings, thoughts and high intelligence.

They can be defamed and insulted also, since they carry with them great honor and prestige in reflecting the 'Names' of GOD, (His attributes, wisdom and power). Doing so carries with it divine legal penalties, though these penalties are mitigated to some degree by our ignorance of them.

Consider relaxing and 'welcoming' these messages and those delivering them instead and see what changes. They are likely to be important warnings relating to loved ones or community, arriving as dreams or visions, art, social genius or other truly constructive thoughts and ideas. They will not contain 'mysteries' requiring anything of you. They will honor Christ and His sacrifice, reminding you that all such 'prices of Progress' have already been paid. They will never solicit worship from you or anyone else. They will encourage humility, health, stable social models, dignified and intimate human interaction and cross-tribal brotherhood without any need to 'force,' guilt trip, or terrify anyone into doing what is 'right.'

Give this an opportunity to manifest and you will not regret it. It sounds like you are blessed with strong connections to the messengers of GOD and a calling from GOD to use these gifts for the benefit of mankind. Use it wisely by making your experiences about more than yourself and you will not continue to feel 'under attack,' suppressed, oppressed or repressed anymore.

28“Come to Me, all who are weary and heavy-laden, and I will give you rest. 29“Take My yoke upon you and learn from Me, for I am gentle and humble in heart, and YOU WILL FIND REST FOR YOUR SOULS. 30“For My yoke is easy and My burden is light.” (Matthew 11:28-30).

"majorly attributed to psychic or psychological factors" - that is your opinion, no doctor would say that.

Get some professional help, there are treatments available for migraines. It is not a single OTC solution, but there is help available that was not around even 5 years ago.

But if it makes you feel better to think its demonic possession, nothing will help.

What part of 'by His wounds we HAVE BEEN healed' don't you believe?

When you don't believe what Isaiah said, or Paul.. that healing was as much a part of the atonement on the cross than salvation was, God can't help you.

If you don't believe God, that means you're calling Him a liar and siding with the father of ALL lies...

Can two walk together unless they have agreed to meet?

You're sick because you believe you're sick.

Why do you believe the lie?

Satan comes only to steal, kill and destroy.

He wants to kill you... and you're buying into it.

Read your Bible... and believe what God says...

And you will be like me: in perfect health day and night.... not so much as a cold or a headache in a decade since I believed.