Cranial nodular worm

Cranial nodular worms were a species of parasitic worm that could infest the craniums of members of the happabore species. Infections of the parasite in happabores could be treated with Happy-Bore Medicated Dewormer, a product produced by Galacti-Stok which contained Trestibinexocycline 5-Gamma, thlank oil, greel-root acid and forage products. Use of the dewormer on cranial nodular worms was suggested in the instructions for the product.

Behind the scenes
Cranial nodular worms were first mentioned in Star Wars: Rey's Survival Guide, a replica journal written by Jason Fry and released in 2015.