Businessman symptoms and conditions

My son is 5 years old and has been on Singulair for 2 years. I am so relieved to find this website after seeing a report about Singular on the local news.
Just the other day I was telling my husband how much it bothers me that our son is not very affectionate. We also have a 3 year old who hugs, laughs and plays like a normal child should. My son, on the other hand, is very rigid if you try to hug him, very serious if you try to joke, and VERY, VERY emotional when I leave him anywhere...as if I'll never return! I don't know how many mornings I've left day care in tears. I always thought to myself "What are we doing wrong?" "Why would he think we weren't coming back?" He is also very moody and argumentative. He reminds me of a very stressed out businessman in his late 50's. Not to mention the leg pains and the nightmares...we have always chalked it all up to "normal" things kids go through. Now that I have read all of the postings on this page I know there is hope. None of us want our children to be unhappy. Thanks for informing me...we are stopping Singulair Immediately!!