Joint hypermobility syndrome is where you get pain and stiffness from having very flexible joints.
Symptoms of joint hypermobility syndrome include joint pain and stiffness, and regularly spraining or dislocating your joints.
Treatment for joint hypermobility syndrome usually involves exercises to help protect your joints and painkillers if they're needed.
Joint hypermobility syndrome can run in families. The joints are loose and the skin is stretchy because the tissues they're made of are weak.