Yes. The head bleeds more than other parts of the body because there are more blood vessels.

Minimac, this is not the first time you have attempted to harm yourself to prove a point to yourself. I'm not judging you, I'm concerned about you.

We've talked about this before... about the obsessive thoughts leading to the compulsive actions.

It would take a lot of force to cause more than a skin injury from a blunt knife. The skull has been known to deflect bullets when hitting at an angle. It is a tough chunk of bone.

Keep in mind that before you can injure your skull, you need to penetrate the skin. The skin over the skull has a lot of blood flowing through it. Cut it and it bleeds bad. You'd be bleeding awful bad before you ever did any damage to the skull. It would take a strong direct stabbing action to penetrate the skull. The knife blade would likely break first, before any serious penetration beyond just a nick.

With all due respect....

You don't just have "skin" on your forehead. You have a thin layer of 3 types of skin, followed by a thin layer of muscle, then a sheath of tough fibrous fascia, then the periosteum of the skull bone (which has nerves and blood vessels mixed thru it which feeds and maintains the bone), then the skull bone, then the dura mater which protects the brain.

It takes considerable force to penetrate all this. The fibrous areas are tough and for a good reason.

Why in heavens would you use a knife on yourself to experiment this way? Where are your parents?

Minimac
I am not sure if you have seen our other forum community but you may find it beneficial http://forums.psychcentral.com/

specifically the OCD forum
http://forums.psychcentral.com/ocd-trichotillomania/

and the anxiety forum
http://forums.psychcentral.com/anxiety-panic-phobias/

It's a blunt knife as stated yeah, and thanks for the links. Probably time I switch over, not so relevant to actual concussion anymore.

But since we're discussing it anyways, I want to direct it back to hair follicles to get it fully covered. I'm fairly sure now that it could've never penetrated the skull or skin. But a last question I still struggle to label an answer on. In what of the three skin layers are the hair follicles, most importantly the roots located, and would for example hitting your head on a sharp edge of a table or something permanently damage some hair roots? Or to stay on track, a blunt but with an edgy knife/object? I picked up that it took serious skin damage, but to what degree? Bleeding?

If the knife didn't pierce all the way through the skin, the skull would only experience blunt trauma if anything, right?

I vow I'll be transferring to one of the forums above, if need be for future concerns, as soon as I get this straight.

I doubt the skull would suffer any trauma. Only the skin would suffer trauma.

Mac,

It sounds to me like you're suffering from extreme Obsessive Compulsive Disorder and you should be seen by a Psychiatrist to help you with the anxiety. I can relate to your thought patterns. Seek help from a professional and you will feel better! Just try to look at this thread from the beginning and realize what you have been talking about.

IF, in the extreme unlikely event I hope, the skull was pierced by a pointy or edged object. The person experiencing the trauma would be able to distinguish between skin trauma and skull trauma, am I right? It would feel differently. And also, if the skull was impacted by a pointy or edged object it would likely be stuck in the head if it penetrated it, no? It's just that I read it more easily can be damaged by low velocity objects as opposed to blunt forces which is what it only effectively can protect from.

Yeah I can see the worrisome pattern. I've read through some other of my threads also, and since I no longer fear those subjects I can easily spot how my concerns emerge and direct those threads offtrack