Causes a gradual poisoning of the player, diminishing their HP over time (15 HP per second). It can be cured by an Antidote or Choir Bell, otherwise it will last 30 (?) seconds or until the afflicted is dead.
Works similar to Slow Poisoning, a status buildup is caused by this effect and when the bar fills up you lose an amount of HP at once (different from the Slow Poison, which makes you lose HP over time). Rapid Poisoning can be stopped by Antidote or Choir Bell.
When struck with a Frenzy-inducing attack, Frenzy builds at a fixed rate. If it activates, the hunter will take damage equal to 70% max HP. Increasing Frenzy resistance extends the bar, meaning the status will take longer to activate. Frenzy buildup can be removed by Sedative but is unaffected by Choir Bell. Frenzy Resistance declines with insight. It is advised to heal to full health if you believe Frenzy will activate.
A longer gauge strengthens attacks but reduces defense. This Gauge is smaller with increasing Insight, thus deals less maximum damage at high insight. Consuming a Beast Blood Pellet or using the Beast Claw will cause this build up.