Frenzy

In Vampire: the Masquerade Frenzy is a state of mind to which a vampire changes when starving, being threatened or angered to the extreme. In this state, the vampire doesn't follow rationale anymore, but succumbs to his inner Beast. He follows his instincts, feeding on the next victim available, attacking those who anger/threatening him or fleeing from the terror he's experiencing.

In VtES Frenzy is a keyword/trait with no inherent game effect. Here's a list of cards which are considered Frenzy cards in VtES (mostly because I couldn't find one on the interwebs). Frenzy cards usually have either two effects, they allow a vampire to enter combat with another vampire or they prevent the vampire subject to the Frenzy card from using equipment and/or maneuvering. Interestingly not only cards requiring Animalism are Frenzy cards, but there some requiring Presence.

• Battle Frenzy
• Bloodlust
• Brujah Frenzy
• Deep Song
• Drawing out the Beast
• Enrage
• Frenzy
• Rötschreck
• Scourge of Alecto
• Terror Frenzy

These Frenzy cards that can be canceled by Abombwe cards and some equipment and master cards provide immunity against Frenzy cards:

• Bestial Vengeance -- immunity during the current combat
• Blade of Enoch -- immunity for the bearer
• Call the Wild Hunt -- immunity during the current combat
• Sire's Index Finger -- immunity for the bearer

Also a number of vampires are "immune" to the effects of Frenzy cards:

• Aleister Crowley
• Gotsdam, the Tired Warrior
  
• Laecanus
• Lord Aaron Wesley Wilkshire

In fact, while Frenzy cards cannot be played on Lord Aaron & Aleister Crowley, Laecanus & Gotsdam are immune those cards.

References:

• Frenzy on "World of Darkness Wiki"
• Frenzy (VtM) on "White Wolf Wiki"