Lays down symptoms and conditions

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 32 m.o. daughter had a mucous-y cough for about a year. Then I noticed that her cough was worse when she lays down at night, and after jumping on the trampoline. I (her mom) have asthma, and it runs all through our family. After a bout of the flu early January, where she was hopitalized for 2 days, I talked with her pediatrician about the "asthma-like" qualities she is showing. Dr. prescribed zyrtec along with 4 mg of singulair at bedtime, with a follow up 3 weeks later. Also prescribed ventolin with a spacer, which we havent had to use yet. (I use inhalers regularly.) We followed up with the Dr, and I told her that her cough is pretty much gone now. So we stopped the zyrtec and are on singulair for a few months. The thing is, I have noticed that she is more aggressive and more irritable than her normal self. I dont know whether to attribute it to the "terrible-two's" or the new medicine. She always wants to hit someone or something. And yes, I notice that her night-time sleep patterns are different. She falls asleep great, but she wakes up in the middle of the night (3 or 4 am) and has a hard time gonig back to sleep. It is the agressive behavior that has me worried, because she does not want to listen or be told what to do, and she is hitting other kids at her pre-school. After reading the comments frmo other Moms below, I gues it acutally could be the medicine and not the terrible-two's!