Christopher J. Haas, MD, FAAD, is a board-certified dermatologist with LCMC Health in Louisiana. In addition to his clinical practice, he serves as assistant professor of dermatology at LSU Health ...
Medically reviewed by William Truswell, MD Key Takeaways Petechiae are tiny red or purple dots that don't turn white when you press on them.Petechiae can be caused by infections, certain medications, ...