Rotschreck

Fear. It is in all of us, that sensation of unknown or going into a dark tunnel not knowing what to expect, or at night the evil presence, a fear that grips the heart without knowing why, where or who is responsible for it.
Vampires also know of this emotion and they are not immune to it, specially to the Rotschreck, The Red Fear.
The Archangel Michael clearly states, while cursing Cain, that he and his children will fear the flame and it will hurt them deeply, causing unbearable agony and pain; Vampires have been cursed not only by weakness to Flame but also fear of it. 
The Rotscheck is a type of frenzy that is triggered by Fire, the fear of being consumed in flames, since it is one of the few things that is Anathema to a vampire and most importantly the cursed imposed by the Archangel Michael himself.

Being close to fire in different situations and depending on the will power of the kindred are the only things that keep the Rotschreck in check, the frenzy is similar as when the Beast controls the Kindred but it is in a fearful state instead of destroying everything in its path, a Kindred seeks refuge and tries to escape by any means possible from the source of his fears.