I would go see your doctor.
If you feel like something is crawling on you
Parasitosis (illusory or delusional)
it feels like something is crawling in my back and my head why?
They are like that because your heart is beating...
Sclerosed vein feel like a cord and you can feel the same along the tract, subcutaneously.
sclerosed
The sensation of something crawling in your ear could be caused by various factors, such as earwax buildup, allergies, or even a small insect. It might also be linked to an ear infection or irritation of the ear canal. If the sensation persists or is accompanied by pain, discharge, or hearing loss, it's advisable to consult a healthcare professional for proper evaluation and treatment.
do you feel something like a hard cord
Veins do not have nerves that detect pain, so they do not typically feel pain. However, if the vein becomes inflamed or there is damage to the surrounding tissues, it can cause pain or discomfort. Conditions like thrombophlebitis or deep vein thrombosis can cause pain in the affected veins.
There just might be something crawling in your hair if you meant hair. Lice can crawl on the hair and be on the scalp to make you feel like scratching the head. See a doctor to confirm if lice is the problem or something else.
maybe cause your hair i lifting off the surface of your skin causing it to allow air
You feel like you finished your jod and feel good about it.