Multiple sclerosis is a neuromuscular disease.

This wasn’t an albino but an erythristic badger, lacking black pigment in its fur through a genetic mutation.

[Y]oung Durward sprung lightly as the ounce up into the tree, drew from his pouch that most necessary implement of a Highlander or woodsman, the trusty skene dhu, and, calling to those below to receive the body on their hands, cut the rope asunder in less than a minute after he had perceived the exigency.

People claiming to be psychic may shoehorn an event into fulfillment of some vague past prediction.