May be Pagets disease. x-Ray, Alkaline Phospahatas
I have gone through your query and understand your concern.
If you do not have any obvious history of Head injury
and indentation from childhood, then it may be due to Paget's disease.
In this disease, the normal bone process is disturbed and thus bone is deformed.
Usually there is no symptoms for this disease in early stage.
Thus you need further investigations like X-Ray of the skull and other long bones like Thigh bone etc.
You also need the blood test
to measure the enzyme called alkaline phosphatase
This may be raised in this condition.
Now you need the thorough examination of entire skeletal system
by your family physician and if needed bone scans.
If this is proved to be a Paget's disease, at this stage no treatment is needed.
Please do the investigation and revert back.
Hope this helps.
Please write back for further queries.
Wishing you good health.