bone skull cancer?

[sis455]

Hello, I'm probably paranoid but I have a ridge on the top of my head that I have not always had.  It is sensitive to the touch.  I part my hair in the middle and it is there towards the back on my skull. It feels like a sunburn when I touch it but there is no skin differences.  My grandmother died from a brain tumor and my mother has one that apparently is not a problem because the doctor's said she has probably had it all of her life.  What could this sensitive ridge be?  

[miamifraxel]

Long bones are found in the extremities: the arms, legs, hands, and feet (but not the wrists or ankles). As their name indicates, long bones have a long central shaft with knobby end portions. The shaft is called the diaphysis and each end is called the epiphysis. Short bones, which are cube-shaped, are found in confined spaces such as the wrist and ankle. Flat bones are thin and wide, providing surfaces for muscle attachment and protection for underlying organs. The ribs, shoulder blades, sternum (breastbone), pelvis (hips), and most of the bones of the skull are considered flat bones. Irregular bones are those that do not fit into the first three categories. Vertebrae (bones of the spinal column) and facial bones are types of irregular bones. [url=http://drjsalomon.com/laser_resurfacing.asp]miami fraxel[/url]

[Londres70]

In my opinion, this does NOT sound like cancer.  Sounds more like a skin/derm. problem.  

I would recommend having it assessed by your physician.