hello, i am 28 and have suffered from hayfever since i was a teenager. the last few years my hayfever has not been as bad as it used to be but i still get symptoms such as sneezing, itching, runny nose, itchy eyes and breathing difficulty. The only medication i take is an antipsychotic. last year when i was psychotic i took an overdose of cetirizine and also cimetidine. even though it was a while ago i was wondering if the overdose had a long term effect. i am getting involuntary twitches/jerks of my arms, legs, head, movements of my tongue and facial twitches. my doctors say it is anxiety. has anyone experienced or heard of this?