The skeletal changes in osteopetrosis can range from subtle to profound (as in this case). 

While the bones are dense, they are brittle resulting in predisposition to fracture. When they do fracture, bone healing is delayed. In older patients, bone pain may be a presenting complaint, even in the absence of fracture.

Bone overgrowth around the base of skull results in narrowing of the foramina and neural compression.