A case of pregnancy and lactation associated osteoporosis in the third pregnancy; robust response to teriparatide despite delayed administration.

BACKGROUND

Pregnancy and lactation associated osteoporosis (PLO) is a rare condition that may present with fragility fractures occurring for the first time in pregnancy or postpartum period while breastfeeding. Here, we report a rare case of PLO in the 3rd pregnancy treated with teriparatide.

CASE REPORT

A 35-year-old woman who presented with back pain (visual analogue scale; VAS = 10/10) two months after her third delivery. PLO was diagnosed from multiple vertebral fragility fractures and low bone mineral density (BMD). She was treated with teriparatide and her pain significantly reduced in the second month. After 12 months of teriparatide treatment, her BMD increased 18.1% from the baseline.

CONCLUSION

PLO should be considered in patients who complain with back pain during late pregnancy and postpartum period. Weaning off breastfeeding and supplementation of calcium/vitamin D should be the first recommendation as conventional treatment after the diagnosis of PLO. Teriparatide may be an effective option to improve the recovery of BMD If there is not enough improvement with conventional treatment.