My 2 and a half yr old started biting or picking at her bottom lip till it bleeds about a month ago. I tried ignoring it cause she did it when she was bored (like sitting in car seat on the way to store) and figured if I said anything she would do it more. But now she does it all the time and it really bothers me. I've found blood on her sheets and sometimes she looks like we've socked her in the mouth there is so much blood! She hardly ever does it when she is angry... mostly when bored or tearful. The tantrum stage is kicking in as well and not wanting to sleep in her room at night. I've tried putting lip balm on her lips but not helping. Is this a way for her to vent frustration? Something I should take her to the doctor for? She's a loving, playful gal who likes to get into everything. Her speech is so-so. She says some things that are around 4 or 5 words long, but uses still a lot of one word wonders to get things she wants. (Milk when she wants milk.. not I want milk, etc) She knows most of her alphabet on site, counts to 13, points/knows body parts, knows some shapes/colors. She has a 6 yr old sister and i'm a stay at home mom (married, hubby is active with girls). Any ideas?