The causes of PGP are multifactorial and can include hormonal changes, mechanical factors, and pre-existing conditions. During pregnancy, the hormone relaxin is released, which can lead to the loosening of ligaments and joints in the pelvic area. This can result in instability and pain. Additionally, pre-existing conditions such as [lower back pain](#), [hip dysplasia](#), and prior pelvic trauma can contribute to the development of PGP.
