Planar Diseases. By the time adventurers are hopping between dimensions they are largely beyond fearing virulence, equipped with healing magics that make diseases an easily ignored threat. No longer! This article explores afflictions that can strike wayward planar travelers, sicknesses that extend beyond the confines of the realms material. Adverse ascension affects those who have overly exposed themselves to divine energies, fractured rift disorder can result from the use of dimensional portals, fey longing influences the minds of mortals too fond of the Feywild, and both the pastrasites of Limbo and spectral thought-worms of the Astral Plane can eat away the very memories of a creature to change history itself!