i am 28 years old,for the past few years i have been having problems,involving my brain, i have these what i call 'moments' it happens normally when i am talking my brain freezes,and i cant speek,it normally last about 30secs,and then i am ok again, i think i had them when i was around 14/15,but they went away,then when i was 25 they came back,and they are getting more and more freq, does anyone know what this is?? thanks