Lice

A head infestation of biting lice that makes the wearer's scalp a hazard zone. Lice inflicts the Bruise status on the equipped cat as a constant downside, but the SpawnThingOnDamage passive deposits lice onto any enemy that deals damage to the wearer — spreading the infestation outward with each hit. The Bruise is a meaningful cost, but cats who absorb many hits per fight can rapidly infest enemy formations through repeated contact, making Lice a head-slot equivalent of Scabies.