My daughter is usually a happy, friendly, smiley baby. She has started getting some stranger anxiety, where when strangers talk to her she hides her face but then smiles at them while her head is on my shoulder. She also will only let me or FOB really hold her (though that may have more to do with teething at the moment). What I am worried about it that she is easily startled and frightened. If there is a loud noise or if something pops out unexpectedly, she jumps. If we are in the living room and someone comes through the door, she freaks out and tries to climb me in order to 'get away' from who ever is coming through. Today, she was playing in the living room, across the room from me, our roommate came out of his room and I was trying to get Noiee to say hi to him as she usually loves him and is always happy to see him. All she would do is look at me and smile as she must not of heard his door open. He finally said something and the look of panic on her face was heartbreaking when she realized there was someone in the house and she was so far from me. She tried to take off crawling toward me but couldn't get to me fast enough (in her opinion) and finally gave up and sobbed on the floor (this all took place in less than 30 seconds). When I scooped her up and she looked at who it was that talked she was all smiles and bouncy happy to see him like usual. I just don't understand why she is afraid of other people. How does she know to be afraid? Is this a sign of abuse? Should I be looking at her childcare worker or something? She never had any bruises or marks, and she always seems happy to go, never crying or anything. How does a 7 month old know to be afraid of someone coming through the door or afraid of someone that she cant see and didn't realize was there? I would really appreciate some advice or insights.