An adjustable treatment support comprises at least three generally planar rigid support members mountable to one another in different angular orientations to provide a support structure having a variety of configurations. Individual support members are mountable to one another to provide a support structure suitable for use with a bed to provide an extending head support for massage and other types of body work. Individual support members may also be configured to provide a support structure suitable for use with a subject in a seated position at a chair adjacent a table. The individual support members are collapsible or detachable for convenient storage and transport. Kits comprising a plurality of support members, a bag for storing and transporting them, instructional materials, music and other relaxation accessories are also provided.