Geographic Range. The original range of Canis lupus consisted of the majority of the Northern hemisphere -- from the Arctic continuing south to a latitude of 20Â° S, which runs through southern Central Mexico, northern Africa, and southern Asia.
Disc desiccation is an extremely common degenerative change of intervertebral discs. The incidence climbs with age, and to a large degree a gradual desiccation is a 'normal' part of disc aging. It results from replacement of the hydrophilic glycosaminoglycans within the nucleus polposus with fibrocartilage.
While nagging and low grade pain is the most common symptom associated with disc desiccation, some of the other symptoms associated with the condition include the following, 1  Pain is located around the lower back region and may radiate down to the hips or the thighs.