Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 10/18/2025

Mastitis Etiology and Pathophysiology

Risk Factors and Etiology

  • The American College of Radiology identifies risk factors for mastitis, including poor infant latch and improper lactation technique, in breastfeeding women 1
  • Periductal mastitis and duct ectasia are common benign causes of non-lactational mastitis, particularly in women in their fourth decade of life, according to Praxis Medical Insights 2
  • The condition is predominantly inflammatory rather than hormonal in nature, as noted by the Journal of the American College of Radiology 3

Pathophysiological Changes

  • Focal breast tenderness typically precedes visible skin changes, as reported by the Journal of the American College of Radiology 1
  • Inflammation involves breast parenchyma and may extend to dermal lymphovascular structures, according to the Annals of Oncology 4

REFERENCES

1

acr appropriateness criteria<sup>®</sup> breast pain. [LINK]

Journal of the American College of Radiology, 2017

2

Nipple and Areola Pain Evaluation and Management [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

3

acr appropriateness criteria<sup>®</sup> breast pain. [LINK]

Journal of the American College of Radiology, 2017