Viewers generally find 'Brain on Fire' emotionally gripping and well-acted, particularly praising Chloë Grace Moretz's performance. The film effectively conveys the suspense and frustration of diagnosing a mysterious illness, and it's appreciated for its educational value about a rare medical condition. However, some felt the pacing was too rapid, and the narrative development lacked depth, preventing a deeper connection with the characters.

👍 Chloë Grace Moretz's performance shines.

👎 Some find the character development lacking.