Hi, sorry to drag up an old thread, but i googled almost the exact same thing as the OP and this thread is all i found. Any further advice for someone suffering the same thing?

It doesn't happen often, but when it does, every noise sounds angry and its really hard to shake off. I cant think of any reason why it happens - nothing triggers it that i am aware of, and after a few mins it goes away. Often, drinking a glass of water helps, but i am not dehydrated