you will need two (or three) mirrors that you can easily carry or you would need a big heavy mirror and a small mirror that you can easily carry or you will need two heavy mirrors that you can stand bettween and see both of them at the same time.
Buy a pair of glasses and put them on the back of your head!
Can you see the back of your head
There are many things that might be at the back of you that you can't see. You generally can't see the back of your own head, your back, the back of your arms, or even your bottom without a mirror.
it means they see everything
The snipe or woodcock has eyes located in the top of its head, thus giving it 360 degree vision. If a bird can see its back without turning its head, it is the snipe.
For a lump on the back of your head you could see a dermatologist (skin doctor) or oncologist (cancer specialist), or possibly an endocrinologist (if the lump has a hormonal cause). For a lump in the back of your head, you could see a neurologist.A general practitioner / family doctor will be able to give you a "top to toe" check up and see if there's anything you need to be referred for.
it means you should see a doc
You could have a concussion if you've fallen and the back of your head starts to hurt. You need to see a doctor right away under this situation. The back of your head could hurt due to a recent fall and the on set of a concussion. If you've fallen recently it's best to see a doctor.
see your doctor
You need to see a doctor for this problem.
what will happen is tgay the head will swell or the belly would go big, it will have rashes on its head, you will see the baby in the hole in its back or u would see it in the head
It could swollen lymph nodes on the back of your head, or an allergic reaction to something. When all guesses fail, see a doctor.