Dramatic improvements symptoms and conditions

My three year old son has been off Singulair for @4 weeks now. He still is having these crying episodes, though not as long, often or severe as before, but to the point that still has my husband and I going nuts!! Has any one taken there child back to the doctor's to have them evaluated for these symptoms? If so were they any help.
Thanks for everyone posting their stories, this site has really helped!

My 6 year old son has had all of these more or less. He has been on Singulair for about 5 months. We took him off last Friday when he started having seizures. It is only now that we are connecting the things he has complained about. He is still going through testing but everytime a test is done it is negative. He is in perfect health. The dr.s are stumped. What happens is, he smells a wierd smell. Then he sees lights. After this he has a bad headache and becomes weak so he lays down. Shortly thereafter he stiffens and starts shaking his arms and legs while clinching his hands. He also grunts and makes a buzzing sound and appears as though he only breathes out. the dr.s say it is not seizures but movement disorder and if it is Singulair it should be out of his system within 3 days... He is still having the seizure type fits and its been a week since we took him off singulair. He is still losing his temper and having horrible dreams as well. Cat scan was normal, EEG was normal, blood work is ok, they want to do an MRI but does this sound familiar to anyone?

my son was on singulair for 3 years. he was suffering many side effects that i did not recognize until recently. his doctor increased his dose due to his age and all the side effects amplified. after discontinuation of the singulair, he improved dramatically within 2 weeks. i wish i would of been warned about the side effects some children experience. he suffered for 3 years with anxiety, restlessness, irritability, horrible nightmares and many others effects. the side effects are sneaky and not always obvious. i never attributed it to the singulair. he has made dramatic improvements off this drug. he is like a new little boy. i would warn all parents to be careful of this drug and watch for all the side effects that the doctors and drug company do not warn you about. i am thankful i found this website and discontinued the singulair. he had suffered long enough.