Raynaud's phenomenon of the nipple is an unusual side-effect of labetalol use. There is one official report from the United Kingdom. The present case concerns a 30-year-old woman, gravida 1, para 0, who developed pre-eclampsia and was treated with labetalol but subsequently reported neuropathic pain of the nipple. Nifedipine was then started as part of her treatment plan for blood pressure control and she no longer reported pain, despite being given six more doses of labetalol. Nifedipine is the first-line of treatment for Raynaud's phenomenon. The concomitant use of labetalol with nifedipine by a woman with Raynaud's phenomenon of the nipple has not been discussed before. The goal of this review is to raise awareness of this drug-induced phenomenon and to add to the limited literature available on this subject.
Keywords: Labetalol; Neuropathic pain; Nifedipine; Nipple pain; Pre-eclampsia; Raynaud's phenomenon.