Overview
Author is sick (作者は病気, sakusha wa byōki) is a tag used to point out the illustration, novels, or its author's abnormality. Sometimes this tag gets used by the authors themselves, but that is conceivably just a case of the author's chuunibyou side popping its head to cover up the embarrassment or something akin to that.
Often given as a prize to people who cannot draw the routine, although in case of an artist being serious, you should keep in mind that some just did not like the art.
Occasionally, the author may have been literally sick while drawing.
Seldom, when an illustrator specializing in gag pictures submits a non-gag, beautiful piece of art, that gets this tag.
Related Illustrations
Related Articles
Author is Sick < Author on Deathbed < Author is Missed < Come Clinic < Fetch a Clinic < Let's Build a Clinic Here < Run Clinic Run < Modern Medicine Gives Up
List of Evaluation Tags (includes a list of Author is Sick kind of tags)
This is Terrible WTF Chaos Idiot Author is Sick Series Take Care There Author is for Real
Author's Mind is Transdimensional (Inazuma Eleven)
Author is Irregular (Megaman X)
Official is Sick - when the image is true to the canon AND "the author is sick", you will see this tag often.
Pikachu - probably it was because there are many users on pixiv who try to ruin the national image of Pokémon, but at one time, each page of the Author is Sick tag search results (that is 20 hits) had at least one hit with an illustration having this yellow beast in it. It is no more as widespread these days, but there is still a tendency to re-render Pikachu overtly. Pokémon-related images get this tag relatively often in general.
HeartCatch PreCure! - not as much tags as Pikachu, but it still easily gets pixiv's attention in the manner of the tag in question. Kurumi Erika's big friend manifestation of love occurs as well, but that is even worse, being Official is Sick.
No Longer Human - A must-read for authors with this kind of sickness