Hypermobility refers to an increased range of movement in joints. The term hypermobility can describe a wide range of children with flexible joints. Hypermobility lies within a spectrum, ranging from children who have no symptoms and may benefit from their flexible joints to excel in areas such as gymnastics and swimming for example. At the other end of the spectrum are people who experience pain, and their joints may dislocate. Hypermobility can cause some of the difficulties/symptoms listed below.