My 7 year old has been on SINGULAIR for more than two years. Sin...

My 7 year old has been on SINGULAIR for more than two years. Since then we have been to the doctor’s office for numerous issues – over time I began to question her mental state. I thought it was an excuse not to go to school. Although I knew that she loved her teaches and school friends. She has complained about stomach aches (Although in 2007 I concluded that she was Lactose intolerant) leg cramps, fevers, headaches, neck aches and also a pain in her back. I have noticed an awful onion smell from time to time. Over the past few months she has become more emotional and moody. She has had an inability to focus and said that she felt “crazy and wanted to mess things up”! She is a sweet girl and loved by all so this does not make sense.