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.
Symptoms of osteoarthritis of the knee may include: 1  pain that increases when you are active, but gets a little better with rest. 2  swelling. 3  feeling of warmth in the joint. 4  stiffness in the knee, especially in the morning or when you have been sitting for a while.