There can be many reasons for this, including skin diseases, bug bites, boils, tumors, sun burn, wounds. See your doctor if you think your symptoms are unusual for your body.
This sounds like eczema (I have it).
YES!
it's because of an itch i think it can go away just dont shave that part of the head
Chicken poxs if they are red
no
Usually a week
Bumps may form after a caterpillar has crawled on the skin. The bumps may go away after 3 to 5 days. If the bumps itch, a good home remedy is to apply any stick deodorant to the affected area when it starts to itch. A person should seek medical attention if the bumps appear in the form of blisters or turn a bright red.
No
because it is not a physical disturbance. it is psychological. itch at the back of your head and it will magically go to the back of your head
RLS (Restless Leg Syndrome)
Koi do not specifically have "bumps" on their heads that I am aware of. Please describe these bumps. if its the bumps im thinking of its like a fore head they have like a little frown
The red bumps on a turkey's head are called CARUNCLES.