A portable, personal therapy chamber for provision of radiation therapy. The therapy chamber includes a pair of telescopically positionable units that are lightweight and easily portable by a single user. The therapy chamber is configured for use by a single person lying generally prone on a surface. The units are formed from a plurality of pivotably coupled panels that are foldable in a first direction to a rolled up, tube-like storage configuration and unfoldable in a second direction to an arched formation or use configuration. The units, in the use configuration, are disposed to overlie the user and include a plurality of emitters that direct infrared energy toward the user's body.