Extremely jumpy
So I have this problem that causes me to jump at the smallest of things. Mostly sudden loud noises. But I'm also very jumpy at sudden rapid movements caused by people. Everyone around me laughs when this happens. My friends have a blast scaring me. The smallest noises spook me at night causeing me wake up and noit get a good sleep. However I can sleep quite well with my laptop playing music. Is this normal? Please comment and help me out.