Primal Rock Therapy was the only studio album by Seattle grunge band Blood Circus. Sub Pop Records originally released it as an EP in 1989, but it was reissued in 1992 with seven extra tracks, including the band's first non-album single and five unreleased tracks from 1989. Although Blood Circus were one of the original bands on the grunge scene in the late 1980s, and Primal Rock Therapy has since been recognized for its historic status as one of the first grunge albums ever released, at the time of the album's release it was panned by critics and became one of the poorest-selling albums ever released on Sub Pop.