A learning disability is a general term that describes specific kinds of learning problems that cause a person to have difficulty acquiring certain skills. The skills most often affected are reading, writing, math, listening, speaking, and reasoning.
Osteopenia usually has no symptoms. There is no pain or any other sign to signal that the bone is becoming thinner, although there may be incidences of frequent fractures as the bones tend to become fragile and soft.
Other symptoms associated with osteopetrosis include: 1  bones that break easily and do not heal properly. 2  This infant has osteopetrosis, a condition which thickens and hardens the bone. Note the unusual shape of the skull. 3  bone pain.  carpal tunnel 1  syndrome. osteoarthritis. 2  convulsions. enlargement of the liver, lymph glands, or spleen.