25th April 2024

A 28-year-old woman, three months postpartum and breastfeeding, presents with a painful, red, swollen area on her right breast

A 28-year-old woman, three months postpartum and breastfeeding, presents with a painful, red, swollen area on her right breast. She reports feeling generally unwell with a fever of 38.6°C. On examination, there is a tender, warm, erythematous area in the upper outer quadrant of the right breast. There is no nipple discharge, and the lymph nodes are not palpable. She has no personal or family history of breast cancer.

Which is the most likely diagnosis?