@helpnywhereucan I have eosinophilic or e -asthma, and my doctor called it allergic asthma. Eosinophils are one of the types of white blood cells. Mast cells are blood cells that release histamine causing allergic reactions like for example an itchy bug bite. The article link below talks about those. My rescue inhalers do work, but I also do allergy shots and use HEPA filters at home. I've started wearing a mask when I'm out in public because I'll be triggered by stuff on other people like smoke or fragrances. There are times when exposure to my triggers is too much and nothing really works except getting back into filtered air. I do also have a preventative steroid inhaler and it works by suppressing the immune system. My functional medicine doctor (who does my allergy shots) has warned against long term effects from steroid inhalers, so I reserve that for when I really need it like before going to a show and being in public close to other people. If my other methods of shots, antihistamines, rescue inhaler, Mucinex, and cough drops (for the menthol) are not enough, I'll use the steroid inhaler which does work. One of the tests I had at Mayo for my asthma measured exhaled nitric oxide and from that they determine if you have airway inflammation. When I get to having too much phlegm that I can't clear, it causes my heart rate to go up, and I'll resort to using a topical antibiotic ointment in my nose that cures the infection that seems to be starting, and I'll clear all the phlegm. This was prescribed for me as a pre-surgery treatment for staph infections when I had spine surgery at Mayo, and I found it worked well when I had a sinus or chest infection, and my doctors have given me a prescription to use it when I need it. I've been able to reduce the frequency of this by being better about controlling my allergies through reducing exposure and being dillegent with allergy shot injections.

Here is a very techinical article about eosinophilic asthma.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3990389/