ON THIS PAGE: You will find information about how many people are diagnosed with this disorder each year. You will also learn some general information on surviving the disease. To see other pages, use the menu.
Mastocytosis is a rare disorder, and its true incidence rates are unknown. Mastocytosis affects males and females in equal numbers and can begin during childhood or adulthood. Childhood-onset disease usually occurs before a child turns 2 years old.
Source: National Organization for Rare Disorders.
The next section in this guide is Risk Factors . It explains what factors may increase the chance of developing this disease. Or, use the menu to choose another section to continue reading this guide.