Itching can be diffuse (generalized all over the body) or localized -- all over or confined to a specific spot -- and there are many causes of diffuse and localized itching. Itching symptoms can be associated with. 1  rash,  dry skin,
How are the Sacrum and Coccyx different from the other vertebrae? The sacrum consists of 5 fused sacral vertebrae and the coccyx consists of 4 fused coccygeal vertebrae. They are different because the are not moveable.
The sacrum is a single wedge-shaped bone formed by the fusion of five sacral vertebrae. In childhood, the sacral vertebrae are separated by intervertebral discs in much the same manner as the upper parts of the spinal column. However, around the age of 20 these vertebrae start to fuse by ossification of the discs.