Organomegaly involves the enlargement of body organs. Many different factors may cause such enlargement. While some causes are benign, others are more serious. Heart enlargement, liver enlargement, and spleen enlargement â called cardiomegaly, hepatomegaly, and splenomegaly, respectively â represent three examples of abnormal organ enlargement.
Thumb pain can result from damage or injury to any of the structures in your thumb, including bones, joints, tendons, nerves, muscles, blood vessels, connective tissue, skin or fingernails. The symptoms may be constant or they may vary, and they may improve or worsen with movement.
Types include: 1  Ulnar nerve compression at the wrist: This causes numbness and tingling of the little finger, part of the ring finger, and in the palm on the little finger side. 2  Ulnar nerve compression at the elbow: This causes not only the numbness noted above but also numbness on the back of the hand on the pinky side. Pressure on the radial nerve in the forearm or above the wrist: This can cause numbness over the back of the thumb, the index finger, and the web between these two fingers. Median nerve compression at the elbow: This can cause numbness not only in the same area as in carpal tunnel syndrome but also in the palm at the base of the thumb.