It may be that you have an infected hair follicle, oe a swollen lymph node. Other possibilities exist, as well. The best course of action would be to have it checked out by a doctor.
A lump on the back of your head that is itchy may be from an inset bite. If the lump does not go away, visit a doctor.
A red itchy lump on the skin that is about the size of a penny and which is raised slightly is most probably some type of bug bite. If the lump does not go away after about a week, consult your physician.
It could be ringworm, bug-bite, or something else...
asians
There could be many reasons why a person would have a lump on the buttocks. The lump could be a cyst, keratoacanthomas, or a neurofibromas. A doctor will need to be consulted to find the exact cause.
Any lump (painless or not) is cause for concern. I would get it checked out, it may be nothing....but it could be something serious, you should get it checked early. It could be something as innocous as harmless skin lump or it could be something more, go to the doctor to be checked out.
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 could be an imbedded tick.
You should see a doctor. You could have bleeding within the tissues which can cause the lump. You should see a doctor. You could have bleeding within the tissues which can cause the lump. You should see a doctor. You could have bleeding within the tissues which can cause the lump.
It's in your genes...
Yes it can, especially if it is on or near the sciatic nerve.
A smelly lump on the back of the head may be an infected abscess. It could also be a sebaceous cyst.