Decrepitude

Decrepitude is obtained when An Affliction, An Injury or Hunger is left to decay its full time. Decrepitude can also be obtained by speaking to a Spirit with the Thresher of Thoughts aspect (with Reason as the subject), converting a Reason to a Decrepitude.

Usage
Decrepitude can be used in Work to generate Dread and, e.g. to counter Fascination. Sometimes however, it generates only.

You can dream with decrepitude and a corpse to generate an erudition. This is a convenient way to swallow the evidence before it can decay into notoriety or be used by an investigator.

With the Medium? Legacy, sudying with decrepitude and the Formula: Elixir Zeboim grants the Honeyed Memory, which is necessary for completing The Palest Painting. Note that this will destroy the card, making the lost Health impossible to recover.

Curing
Decrepitude can be cured by the Forge's Redemption Ritual or by drinking the True Blood of St. Januarius through the Dream verb. These are the only ways to recover the lost Health.