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.
The list of signs and symptoms mentioned in various sources for Osteopetrosis includes the 3 symptoms listed below: 1  Increased bone density. 2  Brittle bones. 3  Frequent fractures.  more information...Â».