Exploring health and illness perceptions to identify the perceived cause of pregnancy-related pelvic girdle pain. A mixed-methods study among primiparous women in The Netherlands

Background: Pregnancy-related pelvic girdle pain (PPGP) is common and considered a multifactorial condition with biomechanical and psychosocial contributions. The patient's perceived cause is an important aspect of illness perceptions, and a strong predictor of self-management and healthcare utilization. It is unknown what causal beliefs primiparae hold regarding PPGP.Objective: To explore and describe health and illness perceptions among primiparae towards PPGP and its cause.Design: Exploratory, convergent parallel mixed-methods.Setting: At the participants' homes.Participants: Sixteen primiparae with and without PPGP.Findings: Primiparae with and without PPGP held comparable causal beliefs about PPGP. PPGP was described as the result of hormonal softening and loosening of the pelvis, and failure of the muscular system to compensate for that. Women who experienced similar physical symptoms attributed them differently, leading to different coping strategies. Interestingly, maternal healthcare providers reinforced the unidimensional-and predominantly biomechanical view when women sought healthcare.Conclusion: The causal mechanism of PPGP held by the women was not determined by their lived experience. It was primarily based on the concept of inevitable hormonal softening of the pelvis. This biomechanical belief is based on theories that are not in line with current knowledge of PPGP and contemporary pain science, yet they were reinforced by maternity healthcare providers.Implications for practice: Healthcare seeking behavior is influenced by illness beliefs. Maternity healthcare pro-viders may play a key role in providing reassurance and addressing the multifactorial nature of PPGP when providing care and support to pregnant women.