Madman's Knowledge
Max No. Held 99
Max Stored 99

Usage Type

QS Bullet Use QS Bullet Use -

Attribute Bonus
Strength icon 2 - Skill icon 2 - Bloodtinge icon 2 - Arcane icon 2 -
Attribute Requirement
Strength icon 2 - Skill icon 2 - Bloodtinge icon 2 - Arcane icon 2 -
Random loot.
Notes Gain +1 Insight.

Madman's Knowledge is a consumable item in Bloodborne.


In-Game Description

Skull of a madman touched by the wisdom of the Great Ones.
Use to gain Insight.
Making contact with eldritch wisdom is a blessing, for even if it drives one mad, it allows one to serve a grander purpose, for posterity.




  • It is good to hoard as many of these skulls as one can to then invest in the more expensive items sold at the Insight Bath Messenger.
  • There is an upgraded version of this item called, Great One's Wisdom.


  • The sprite that manifests itself from the skull, resembles a slug or invertabrate being, similar to the Pearl Slugs or Augur of Ebrietas.
  • Though it is unclear how the Hunter acquires insight from this item, it seems that if a person who dies after being "touched by the wisdom of a Great One", or "making contact with Eldritch wisdom", has its effect remain in his/her skull, even after death. And upon smashing it with the hands, the Hunter is catching a glimpse of the Cosmos itself, thus gaining Insight.

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