A college freshman (CF) comes home for holiday break. CFs behavior is a big cause of concern. Parent has had conversation to find out if anything is troubling. CF has been sleeping 14 hours straight when asked CF says that catching up on sleep as it was a hectic first sem. First meal of the day is only at 2pm. Eats very very less and hardly 2 meals. Parent asks what do u want CF says don’t care. Make whatever. Parent has tried many choices but CF has no appetite. No fruits no milk absolutely. Before going to college though CF would fuss with milk but now had given up completely. Hardly eats any snacks. Has lost a lot of weight. CF says I am finally listening to my body. Will eat as need be. Behavior changes- stays aloof. Hardly speaks voluntarily. Hardly puts a happy face. But is happy when goes to meet a few friends. No conversation normally. Only when parent tries to ask if we should talk to a professional then CF manages to speak for 15-20 minutes a day. One parent thinks CF needs to be seen by professional while other says this is how many kids are. Somehow the concerned parent fears they have lost the child completely as whatever the parent did all these years CF is doing completely opposite let it be hair or dressing up or eating / sleeping habits. There are a very few occasions CF acts the same as before. CF said one thing that CF goes into a tunnel vision mode that CF focuses on one thing sometimes 6 hrs straight without a drop of water like painting or tuning guitar etc. at college CF has been taking hard challenging second sem/ year courses and whatever CF chooses to study is totally CFs choice and parents have never interfered in course selection. CF says I am not a people person and am an introvert let me. be. Will come to doc if it puts parent at ease. What should parents do ? Is professional help needed?