You probably already know of what many people see as “regular” asthma, like the kind that might go haywire when you’re exposed to allergens that bother your respiratory system. But, like many health conditions, there are different variations of asthma, including some you’ve probably never heard of before. Though different types of asthma have that same overarching characteristics, they can each flare up for different reasons. Here are a few surprising types of asthma to keep on your radar.