He has stiffening of the backbone in neck, lumber region with deformity starting. This is normal degenerative changes with aging, varying in intensity and extent in different individuals.
He should avoid bending from back and neck, using high pillow, he should sit with support to back and back should be straight.
There is no medical treatment, except pain killers to reduce pain, anti inflammatory drugs for reducing inflammation, supplements for
calcium and vit d3,
b12,if found deficient clinically or by investigations.
Regular exercises to strengthen muscles around neck and back will be useful
Surgery is considered if problem is severe or disabling.