My daughter is 34 years old and has had 3 children.  Since the birth of her last child (8 mos.) she has developed sores on her breast that ooze a brownish chalky substance and the last one has left a hole.  Her doctor gives her an antibiotic, but they keep coming back.  Could this be a sympton of diabetes?  She is obese.
HIT hanks for posting your query.  No it is not a symptom of diabetes. But yes patients of diabetes have increased risk of having repeated Infections, and it would be good if she gets tested for Diabetes.  The most likely possibility for her repeated breast infection is either improper selection of antibiotic, inadequate duration of medications or collection of pus in the breast which needs to be Chat Doctor.  I would recommend her to get Pus culture sensitivity test and Ultrasound scan of her breast done and revert with reports. Hope this information was useful to you. Any clarifications feel free to ask. Regards.