Occasional inverted nipple. Should I be concerned?

This is probably unrelated to any concern, and simply due to normal breast changes, BUT I hate the word probably. Without examination and more detailed information (age, weight gain or loss, pregnancy history, recent change in hormones or birth control, etc.) I would not blindly reassure.Since you seem sure this is a new and previously unnoticed occurrence, you should see an experienced breast surgeon for evaluation. Do NOT allow someone to simply tell you "It's OK" without further evaluation--remember it's your life that they're betting. Sometimes a dimple in breast skin or nipple retraction can also be a sign of tumor. It would be wise to have this checked out to ensure your peace of mind. Best wishes! Dr. Tholen