Accessory Chains
Between the last two steps above, or following the last, are often introduced one or more of the following accessory chains which modify or increase the final effect and are themselves made possible by the first four steps in the direct chain.
Pathogenic germ.
Poisonous excretions from germs.
Tissue destruction by chemical action of such toxins.
Reflex muscular tension tending to increase subluxation and thus augment nerve impingement and its effects.
Or
Dietetic error.
Abnormal chemical action.