The crease under my breasts is raw, red, moist, and incredibly painful. normally it doesn't hurt, but it's always red. what can i do?

Yeast medication: This is probably a yeast infection under the breast. Yeast loves dark areas that stay moist. To get rid of it, you can use an over-the-counter yeast medication. You can use a vaginal yeast cream on the skin. You can put them on 2-3 times a day. But you need to find a way to keep the area dry. You can also get yeast tablets from your doc. Best wishes!