T.O.
Maybe she's doing this out of a need for sensory input and oral satisfaction. At that age it is absolutely normal and expected that a child needs a certain amount of oral motor stimulation. If the paci is not working, try showing her how to suck her thumb or another finger. And I would DEFINITELY talk to the pediatrician to make sure there is nothing else wrong. I don't blame you for being worried about the appearance of the marks, and I would worry that she's actually hurting herself. Many small children (like my son) pull hair and bite themselves at an early age as a way of regulating pain. My son was suffering from terrible ear infections at 2-5 months and we didn't know it until he started pulling his hair so hard he would just scream in agony. We were told by a pediatric psychiatrist that it was an attempt at pain regulation. He didn't notice the pain from the ear infections as much as long as he was controlling the amount of pain he was inflicting on himself elsewhere. Odd but true. Good luck and best wishes.