List of characters with medical conditions

This is an incomplete list of characters with medical conditions.
 * Binky Barnes (Peanut allergy)
 * Buster Baxter (Asthma)
 * Carl (Asperger syndrome)
 * Grandpa Dave (Alzheimer's Disease)
 * Fritz Langley (Arthritis)
 * George Lundgren (Dyslexia)
 * Leah MacGrady (Cancer)
 * Jenna Morgan (Milk allergy and Nocturnal Enuresis)
 * John Morris (Asthma and pollen, dander and peanut allergies)
 * Lydia Gordon (Paralysis)
 * Marina Datillo (Blindness)