Did you know there are four types of hypermobility spectrum disorders (HSD), based on the type of joint hypermobility present? 1. Generalized HSD (G-HSD) 2. Peripheral HSD (P-HSD) 3. Localized HSD (L-HSD) 4. Historical HSD (H-HSD) Hypermobility spectrum disorders are connective tissue disorders that cause joint hypermobility, instability, injury, and pain. Other problems such as fatigue, headaches, GI problems, and autonomic dysfunction are often seen as part of HSD. The hypermobility spectrum d