Question: I Feel Sick is a "doubleshot", full-color comic book written and drawn by the comic artist Jhonen Vasquez,Vasquez stated that the creation process of "I Feel Sick" was which term, that's the purification and purgation of emotions—particularly pity and fear—through art or any extreme change in emotion that results in renewal and restoration?

Context paragraphs:
Jhonen Vasquez: Jhonen C. Vasquez (born September 1, 1974) is an American comic book writer, cartoonist and music video director.  He is best known for creating the comic book "Johnny the Homicidal Maniac", with its spin-off comics "Squee! " and "I Feel Sick", and the Nickelodeon animated series "Invader Zim".

I Feel Sick: I Feel Sick is a "doubleshot", full-color comic book written and drawn by the comic artist Jhonen Vasquez and colored by Rosearik Rikki Simons (who also voiced GIR in "Invader Zim").  It revolves around Devi D. from "Johnny the Homicidal Maniac" (JTHM), and her dealings with the same supernatural and/or psychological forces that drove Johnny to lunacy.  Originally intended as a single paperback, it was later split into two issues so as to avoid compromising the length of the story.  It was published by Slave Labor Graphics.  Vasquez stated that the creation process of "I Feel Sick" was cathartic.  The problems Devi had while working for NERVE and neglecting her own work was reminiscent to the pressure Vasquez had while working on "Invader Zim".

Squee: Squee is a fictional character in Jhonen Vasquez's comic book "Johnny the Homicidal Maniac", who was later featured in his own four-issue series, published by Slave Labor Graphics.  This was eventually collected as a Trade Paper Back (TPB), titled Squee's Wonderful Big Giant Book of Unspeakable Horrors.

List of Johnny the Homicidal Maniac characters: This is a list of characters of "Johnny the Homicidal Maniac", a comic book by Jhonen Vasquez.

Johnny the Homicidal Maniac: Johnny the Homicidal Maniac (often abbreviated JtHM) is the first comic book by Jhonen Vasquez.  The series tells the story of a young man named Johnny C. as he explores the psychological and possibly supernatural forces which compel him to commit a string of murders with which he always seems to get away.  "JtHM" began as a comic strip in the 1990s, then ran under alternative comics publisher Slave Labor Graphics as a limited series of seven issues, later collected in the trade paperback "Johnny the Homicidal Maniac: Director's Cut".  The series produced two spin-offs: "Squee! " and "I Feel Sick".

Fillerbunny: Fillerbunny is a crudely drawn comic book by Jhonen Vasquez.  The 3 issue series is about Fillerbunny being forced to fill up pages of a comic book by insane scientists, oftentimes Fillerbunny will be introduced to a new friend and then the scientists will kill said friend.

Catharsis: Catharsis (from Greek κάθαρσις "katharsis" meaning "purification" or "cleansing") is the purification and purgation of emotions—particularly pity and fear—through art or any extreme change in emotion that results in renewal and restoration.  It is a metaphor originally used by Aristotle in the "Poetics," comparing the effects of tragedy on the mind of a spectator to the effect of a cathartic on the body.

Invader Zim (comics): Invader Zim is an ongoing American comic book series created by Jhonen Vasquez.  It is a continuation of the animated television series of the same name that originally aired on Nickelodeon.

Slave Labor Graphics: Slave Labor Graphics (SLG) is an independent American comic book publisher, well known for publishing darkly humorous, offbeat comics.  Creators associated with SLG over the years include Evan Dorkin, Sarah Dyer, Woodrow Phoenix, Jhonen Vasquez, and Andi Watson.

Squee!: Squee!  was a four-issue series by Jhonen Vasquez, published by Slave Labor Graphics, featuring a supporting character from Vasquez's previous series "Johnny the Homicidal Maniac".  The series was eventually collected as the TPB, titled "Squee's Wonderful Big Giant Book of Unspeakable Horrors".

Supporting paragraphs: I Feel Sick Catharsis
Answer: Catharsis