Allergic is about a young girl, Maggie who can't wait to get a dog for her 11th birthday. But, when she meets the dog, she starts breaking out in hives and rashes. Ultimately, she is faced with learning she is allergic to animals, specifically anything with fur or feathers. As an animal lover, she is heartbroken by this news. So, she goes on a quest to find the perfect pet for her. 

This was a very informative graphic novel about what it's like to have an allergy. She takes allergy shots, medicine, and goes to the doctor frequently. There's also a side character who has a food allergy and we learn about the differences. Besides Maggie learning about her allergy and now living her life safer, she goes through a lot of mood swings and emotions as she tries to navigate her new way of life.
 
Meanwhile, she's also dealing with loneliness. Her mother is about to give birth to their fourth child, leaving Maggie feeling isolated. Her brothers are twins and have each other, and without a pet, she feels very lonely and feels as though she has no purpose.

I really enjoyed this, it was a quick read about family, being the oldest child, and living with an allergy.