Before I was diagnosed with asthma I would get a terrible itch on my chin and neck when I started coughing. Nothing seemed to help. At times I would take Benadryl to try and get some relief. After my diagnosis, I came to understand that it was a precursor to an asthma attack.
I see it as a good thing in that it makes me mindful of preparations to prevent an attack. I usually drink hot ginger tea which helps me a lot. I also put peppermint oil on my chin and neck which helps with the itch.
Of course, I use my inhalers but the tea and peppermint oil does help.