Started in 2009, Brosh often mixes text and illustrations to tell stories from her childhood, discuss her thoughts, and describe the challenges she has faced, particularly with mental health.

Hyperbole and a Half draws inspiration from "rage comics," with shared diction and simple, almost rudimentary art.

[7] Her site got 1.5 million visits in a day, and the number of supportive comments from people indicating that they were worried about her surprised her.

Basically, it has lots of pictures and words and it really tries hard to be funny.”[15] Each blog post is a mix of text and illustrations describing her life.

Several are about childhood stories, such as attending a children's birthday party while heavily sedated or becoming a monster after getting a dinosaur costume.

Others are events or thoughts as an adult, such as attempting to move house despite her dogs' behavioral problems, speculation about her character flaws, a grammatical pet peeve ("a lot" written as "alot"), or her depression.

[4] The character representing Brosh loosely resembles a stick-figure with a pink dress, with wide-grinning, unfocused eyes and a triangle-shaped ponytail sticking up which she jokingly calls a shark fin.

[14] In October 2013, Brosh published a book entitled Hyperbole and a Half: Unfortunate Situations, Flawed Coping Mechanisms, Mayhem, and Other Things That Happened.

Before the book's publication, Brosh revealed its cover on Facebook and Twitter and participated in a marathon "ask-me-anything" session on Reddit.

[5] Bill Gates praised her book, saying, "While she self-deprecatingly depicts herself in words and art as an odd outsider, we can all relate to her struggles.

It is no hyperbole to say I love her approach—looking, listening, and describing with the observational skills of a scientist, the creativity of an artist, and the wit of a comedian.

Club called the book a departure from the previous one, reflecting personal tragedy and profound change, saying "Her work has always been funny and full of empathy, but the depth of emotion is different, and the compassion and appreciation are more mature."

Rosberg said that Brosh has refined and tightened her art style, telling complicated stories with minute changes in body language and expression.

[2][8] Linda Holmes, from NPR, praised her work, saying "Brosh's posts are hugely evocative, gut-bustingly funny, and startlingly inventive in using simple drawings in ways that allow for pauses and comic timing" and compared her method of depicting "giddiness and anger" to Bill Watterson.

"[7] Amy Dobek of the University of Missouri–Kansas City Library says that "it's not so much the stories themselves that are side-splittingly funny – it's the combination of her histrionic storytelling style and her primitively mad skills with MSPaint that put her, if I may say, over the top.