How old are you?It's not allowed for doctors to think ' oh they are youg, chance that ...is...'. They know it can strike young people, youngest case I know was 16.At first that was my concern too but there are cases enough known from young people.Testing your own reflexes is nearly impossible, only a neuro knows what to look for. Mine are brisk too: reasons because I'm young, anxiety, body type...I'm trying not to fixate on my body anymore, if they told you it's BFS it will be BFS. Looking at your body: you will find something that you think is abnormal (I know what I'm talking about)Don't test your body: every stair, every weight, ...it will fatique your body because it isn't used to do this. (i know what I'm talking about)B