Diseases and Disorders Books in Order
4 books by Gail Stewart. Reading level: Grades 8.4–10.1. Upper Grades (Ages 12+).
Series books grow with readers — but that's also the trap. Most series start at one reading level and one content intensity and drift upward over the course of the run. Diseases and Disorders (4 books by Gail Stewart) lands at reading level Grades 8.4–10.1, with average content intensity 2.5/5. Intensity stays consistent across the series — a kid who can handle the first book can generally handle the rest.
The reading-order table below lists every book with per-volume reading level and intensity badges so you can spot any escalation before it catches your reader off guard. For a deeper dive into how we score text difficulty vs. emotional weight separately — and why series readers especially benefit from that split — see our methodology page.
Content Intensity Across the Series
ConsistentContent stays at a steady intensity level throughout the series.
Diseases and Disorders Reading Order
| # | Title | Reading Level | Content |
|---|---|---|---|
| 1 | Diseases and Disorders - Lyme Disease (Diseases and Disorders) Gail Stewart | Level 8-9 | Mild |
| 2 | Diseases and Disorders - Phobias (Diseases and Disorders) Gail Stewart | Level 8-9 | Mild |
| 3 | Meningitis John F. Grabowski | Level 10-11 | Moderate |
| 4 | SARS Gail Stewart | Level 9-10 | Moderate |
All Diseases and Disorders Books
Diseases and Disorders - Lyme Disease (Diseases and Disorders)
Gail Stewart
Diseases and Disorders - Lyme Disease (Diseases and Disorders)
Gail Stewart
Diseases and Disorders - Phobias (Diseases and Disorders)
Gail Stewart
Diseases and Disorders - Phobias (Diseases and Disorders)
Gail Stewart
Meningitis
John F. Grabowski
Meningitis
John F. Grabowski
SARS
Gail Stewart
SARS
Gail Stewart
Questions about the Diseases and Disorders series
- What reading level is the Diseases and Disorders series?
- The Diseases and Disorders series by Gail Stewart is at a Grades 8.4–10.1 reading level (average Grade 9.2). Intended for Upper Grades (Ages 12+). There are 4 books in the series.
- What order should I read the Diseases and Disorders books?
- The reading-order table above lists all 4 books with per-volume reading level and intensity ratings. Start with book 1 and read in publication order unless the table indicates a different recommended order for newer readers.
- What age is the Diseases and Disorders series appropriate for?
- The Diseases and Disorders series is recommended for Upper Grades (Ages 12+). The average content intensity is 2.5/5. Check the intensity trajectory above to see whether content gets heavier across the series — if it does, sensitive readers may want to stop earlier in the run.