Education program symptoms and conditions

My 13 year old son started taking singulair Nov 13, 2008 for seasonal allergies. Three weeks later teachers at school recognized a change in behavior that was not typical or noticed prior to the medication. The end of Dec. 2008 loss of appetite and increased mood changes and noticeable aggression toward others and unable to change his feeling even knowing his thoughts & feelings were awful and not typical or right. Jan 13, 2009 we realized it was the med and he stopped taking singulair. Not only is my son still trying to recover from physical effects, he currently is trying to recover emotionally. No longer able to attend school and in a home-bound education program. Would not recommend this drug to anyone. Was taken to the emergency room 3 times within the last month and a half for physical issues and choking sensations & loss of weight. Was admitted to the hospital twice and the hospital admitted him to a psychiatric treatment facility once and currently he is going to a psychologist weekly all within the last month and a half. Prior to taking singulair no major issues.