This term is applied to the fever which comes on either before or after some severe local affection, and is, as it were, eclipsed by it. Thus in all severe inflammations there is an accompanying fever, which generally shows itself before the exact nature of the attack is made manifest, and though it runs high, yet it has no tendency in itself to produce fatal results, subsiding, as a matter of course, with the inflammation which attends it The same occurs in severe injuries; but here also, if there is no inflammation, there is no fever; so that the same rule applies as where there is an external cause.

Sympathetic Fever 92