Good boy symptoms and conditions

My son is almost 5 now and has severe food and inhalant allergies, along with sever asthma. When he was 3 he was hospitalized for 4 days because of his asthma. I have been warned that only 1% of asthmatics will ever be hospitalized, so I've made sure he stays on all his meds. He has been on Singular ever since he was 15 months old. At first it was a God send. Everyday was a constant challenged, fussy, icthy red eyes, constant flow of mucous and wheezing. I would have to pin him down 6 times a day with the inhaler, but when Singular came "poof" it was like magic. He was on Singular when he was hospitalized and is now on 3 meds; Zrytec, Singular and Q-var all given to him everyday. Lately we have had some major issues come up for him. I think I have the next J. D. living with me. NO FOR REAL. My next step is a shrink. You might think I'm mean for saying it, but I don't know how else to describe it. When I was driving he asked for some gum, because I wouldn't let him pick out his own piece, he got out of his car seat and started hitting me over and over again, pulled my hair and tried to "break my arm" as he put it. I had to pull over and I couldn't get him to calm down he kept slapping me in the face and kicking me not only was I embarrassed, but it hurt, I was crying. I have finally come here trying to see if other children, who are on Singular, have had similar episodes. He is a very good boy most of the time and aggression is a hit and miss. I don't know what to do.

My 4 y/o son has very bad asthma/allergies it's been 3mos ago that his Dr. put him on Singulair and he has had no asthma or allergies !!! I was so relieved since he's already been hospitalized 3x for the asthma prior to the meds. The behavior thing is not an issue at home but it is a big issue in public, he starts bouncing off the walls, and is non stop, I don't like taking him anywhere because he gets so wound up,he just starts running from my husband and me, he screams and hides from us. He's in daycare during the day but his teachers say he is a good boy for them. he used to get high strung when he was taking the albuterol / asthmacort (steriods) thru the nebuilzer. So maybe it's just a age thing? I'm not going to just assume it though, I'm going to call the Doctor tomorrow and see what he thinks......

Our son was on Zyrtec for 3 years, we just took him off and went a homeopathic route for his allergies. While on zyrtec, he was so emotional, had trouble in school, cried a ton and was overall a mess! A few days after we changed his meds, he was a DIFFERENT person for the better!